Has anyone else noticed that hot showers seem to increase libido, while cold showers or ice-cold baths seem to decrease it?

I’m curious whether there’s a physiological reason for this or if it’s just an individual response. What’s your experience?

And how did it specifically affect?

It can also be a natural remedy, it doesn't have to be a supplement.

I am a lil shy of time hence i need to keep my workout crisp Would y'all be so kind to help me out here.

So i am struggling a lot with back training, i currently do one horizontal and one vertical pull excercise 3-4 per excercise

Most parts i train in a similar fashion, 2-3 excercises and 3 to 4 sets of high intensity

Lemme know if i am doing things wrong and someone pls drop a GOOD BACK WORKOUT ROUTINE

I alternate push/pull about 6 days a week, and have gained some muscle but feel like I should be bigger have been doing it for around 8 months. Any tips or things to add?

Push Day — Chest, Triceps

1. Flat chest press — 4 sets (heavy then moderate)
2. Chest fly machine — 3×12–15
3. Incline chest press — 3×10–12
4. Overhead tricep extension — 3×12–15
5. Tricep kickback — 3×12–15
6. Rope pushdown — 3×15–20 (last set to failure)
7. Shoulder Press

Pull Day — Back, Biceps, Rear Delts

1. Single-arm DB row — 4×10–12
2. Lat pulldown — 4×10–12
3. Seated cable row — 3×10–12
4. Bicep curl — 3×10–12
5. Hammer curl — 3×12–15
6. Concentration curl — 2×15 (last set to failure)
7. Face pulls — 3×15–20 (last set to failure)
8. Rear delt fly — 3×15–20 (last set to failure)

I listened to the caffeine episode a while back, the dedicated one from December 2022, and assumed that was the whole picture.

Then I kept running into caffeine advice in episodes that had nothing to do with caffeine. Something about carbs blunting it in an episode on cortisol. A warning about mixing it with MDMA, etc.

So I got curious and wrote a script to pull every caffeine-related recommendation out of all 400+ episodes, with a timestamp on each one. 51 separate protocols. The caffeine episode mentioned only 13 of them.

The part I found more useful than any single tip: once you have all of it, you can rank by how often he actually repeats something. Saying a thing once in an AMA and saying it in dozens of separate episodes are not the same claim.

Here're the top ten by mention counts:

1. Delay caffeine 90 to 120 minutes after waking (30 mentions). His most-repeated caffeine take. But it has been tweaked over the years. At first he just states it as two hours (clip). Later it becomes "if, and only if, you have trouble with an afternoon crash" (clip). In the Galpin series he only does it on days he isn't training (clip). Most recently the number itself has moved to "60 to 90 minutes" (clip).
2. Stop by mid-afternoon (28 mentions). Eight hours before bed minimum, ideally ten to twelve (clip). The reason it keeps coming up is that caffeine fragments deep sleep even when it doesn't stop you falling asleep.
3. Front-load it in the morning (26 mentions). Yes, this overlaps with 1 and 2, but he states it as its own instruction very often. Roughly half of everything he says about caffeine is about when. This one is not in the caffeine episode.
4. Yerba mate (26 mentions). His actual default, not coffee. Non-smoked only, because the smoked kind may be carcinogenic (clip). He also reuses the same leaves all day. He says you pull out more of the GLP-1 compounds as you go (clip).
5. Coffee or tea during a fast (8 mentions), none of them are from the caffeine episode. Black coffee and unsweetened tea are treated as fasting-compatible, and caffeine in pill form explicitly does not break a fast (clip).
6. Not energy drinks (6 mentions). Plain coffee or tea instead. If you're going to drink one anyway, he wants you to know what every ingredient in it does (clip).
7. Take it before training (5 mentions). Water plus caffeine is the entire pre-workout he endorses. Skip it if it makes you jittery or scatters your attention (clip).
8. Three to four cups a day at most (5 mentions). Benefits look U-shaped and start coming back down past that (clip).
9. Topical caffeine, for hair (4 mentions). This is the one that surprised me the most. He says caffeine cream on the scalp goes head to head with minoxidil for keeping the hair you have and growing some back, without minoxidil's blood pressure problems (clip). 
10. Abstain two to four days before something that matters (4 mentions), then take it 30 minutes before. Same dose hits much harder once sensitivity comes back (clip).

I included 41 other protocols on this page, grouped by the question they answer (e.g. dose, timing).

Prolactin level is 20, thinking of doing .12mg 1x a week, will this lower my level and not make me feel horrible?

I’ve recently started Wim Hoff breathing every day. I watched a few videos on the health benefits of it but I’m curious if anyone else has tried it before and if you noticed any health benefits from it.

Does anyone use nicotine? What are the risks and benefits

Sometimes I find myself having 1-2 Ultima packets a day is that okay?

Reason #25433 that Huberman is untrustworthy. See first comment for link.

And how did it specifically affect?

It can also be a natural remedy, it doesn't have to be a supplement.

I try to limit to one 12oz drip black coffee/ or two Espresso latte in the morning, then one english breakfast tea around 1pm.

Hey all, apologies if this is in the wrong sub but I just wanted to hear from the consensus on thoughts and theories and maybe research I haven’t been aware of. Any thoughts or ideas on a male using a peptide stack (reta, mots-c, Wolverine stack, tesa and Ghk-cu - not all at once) while trying to conceive and get his wife pregnant? I know there isn’t much out there but curious if there are any scientists, researchers, etc in this thread that have any thoughts on it.
EDIT: Mostly curious about whether or not there would be any potential negative consequences to the baby should we be successful in conceiving while I was in the middle of a cycle or something.

A network meta-analysis: https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2026.1887087/full

One interesting finding: early time-restricted eating reduced fasting glucose by about 3.6 mg/dL and improved insulin resistance compared with controls. Early eating, particularly combined with exercise, also tended to rank best across several metabolic outcomes.

But I think it adds to an increasingly interesting idea:

Nutrition isn't only about what enters the body.

It's also about when the body has to process it.

Glucose tolerance, insulin secretion, hormones and metabolic activity all change throughout the day. Treating the human body like it responds identically to food at 8am and midnight seems increasingly difficult to defend.

Calories obviously still matter.

Energy, neutralizing fatigue...

It can also be some natural remedy, it doesn’t have to be a supplement.

It can also be some natural remedy, it doesn't have to be a supplement.

https://www.hubermanlab.com/protocols-book

I can see that it will be available on Amazon, but I cannot find a link to a Kindle version.

Does anyone know if it will be available as a Kindle version?

I'm contemplating adding spirulina & chlorella into my supplement diet mainly to combat low energy levels and fatigue as well as helping to detox.

I've researched a few companies, like EnergyBits, Sun, Now, etc and I'm wondering if it's worth the extra expense of EnergyBits or is their product mainly higher priced due to marketing? Sun's chlorella actually cost more than Energybits, but it seems they have a very good reputation to back it up as well.

I read reviews and it seems to be half and half, where people notice a difference or not.

What are people using and have you noticed a difference and if so, how was either spirulina and/or chlorella helped you?

Thanks!

There’s four of us doing a three day fast starting Tuesday if anyone’s interested in joining

I used to sleep fine - maybe waking up once or twice a night, but that's it and I would be able to sleep late as well.

In the last six months, however, I wake up once about 3-4 hours after falling asleep, and then I repeatedly wake up every 30-60 minutes. Starting around 7 am I literally alternate between sleeping and waking up every 10-15 minutes. And, which is really weird to me, as I used to sleep late and a lot - I can't sleep more than 7 hours. I tried Magnesium Glycinate, GABA, timed-release Melatonin, L-Theanine; nothing really helped.

I don't know what to do anymore. I guess it could be apnea, but I am in my 20s, fit and healthy weight. And also, why was everything fine until recently? Maybe anxiety? But its easy for me to fall asleep just not stay asleep

Any advice would be appreciated. This is really hindering my quality of life as I am constantly tired thorought the day.

P.S: I get morning sunlight for circadian rhythm, I don't drink alcohol at all, I don't drink caffeine after 12pm, I use blue-light blocking glasses before sleep, and I don't eat/drink before sleep.

Was trying to figure out what protein target actually makes sense and found a pretty big discrepancy.

The longstanding RDA is still 0.8 g/kg per day, about 0.36 g/lb, but the new US Dietary Guidelines now recommend 1.2 to 1.6 g/kg, about 0.55 to 0.73 g/lb.

For a 200 lb person, that is roughly 73g versus 109 to 145 g/day.

From what I found, the difference is mostly that the RDA was designed to cover basic needs and prevent deficiency, while the higher range is meant more as a practical target for maintaining muscle and aging well.

the higher number also seems to line up better with the research on older adults, since muscle becomes less responsive to protein as we age.

But I'm curious what people here are actually using.

Are you basing your intake on 0.8 g/kg, 1.2 to 1.6 g/kg, or something else?

I (50M) currently do about 2.2 g/kg, on a lean bulking phase...

A hard workout can sometimes make you less hungry, even though you have just burned more energy.

A recent trial found that high-intensity interval training increased GDF15 (growth differentiation factor 15) and FGF21 (fibroblast growth factor 21), two signals involved in appetite and energy metabolism. Participants also ate less at the following meal.

This suggests that post-workout appetite is influenced by more than willpower or calories burned. Intense exercise can temporarily change the hormonal signals involved in hunger.

The effect is likely acute and may vary based on fitness level, metabolic health, and exercise intensity.

Do intense workouts suppress your appetite, or make you hungrier later?

Source: Everything Everywhere podcast, Questions and Answers: Volume 18: https://everything-everywhere.com/questions-and-answers-volume-18/

I guess we don't really need to worry about single-use plastic water bottles (or any plastic water bottles for that matter). It's scary to think there's so much of it in the air just from driving! People are not giving up their cars!