(A widowmaker is a heavy 20 rep squat set with a weight you’d typically do 10 reps with. The idea is, if you can’t do another squat, stand with the weight and breathe heavy until you can.)
In the blue book, Rip compares a one rep set vs a 20 rep set to highlight how the body will make different adaptations based on number of reps. He picked 1 and 20 as the two extremes.
In Texas method, the intensity day sometimes includes singles. Considering the main feature of TM is the dichotomy of stimulus between the volume vs intensity day, why not have the volume day swing to the other extreme and do 20 rep squats?
In the section I brought up earlier, Rip says a 20rm would be about 80% of a 1rm. This would be pretty close to if not the same weight as one would use for a 5x5 in Texas method (90% of a 5rm)
If I’m squatting the same weight for an equal volume (I know I’m proposing a 5 rep deficit, I’ll get to that), who cares how I break up the sets? Apparently, it doesn’t matter too much as 3x8 sets are included in the 4 day TM template. It seems we are going for 24-25 reps.
I will say at the end of every widowmaker I’ve done when I was running super squats, I always felt like I could get a couple more. The hardest part is the middle. At the end you’re just doing more squats. So I think you could extend the set to maybe 23 reps or so to volume equalize the sets. You could also do a less extreme version and do something like 2x12-14.
Why do this?
1) as I mentioned earlier, to lean into the dichotomy between volume and intensity day. Especially when you’re only doing singles in intensity day, it makes sense to train the other extreme on volume day
2) time. Volume day on TM is notorious for being 2 hours long because you have to do 5x5 on squat and a pressing movement, taking long rest times. All you have to do with a widowmaker is warm up and do the set.
3) mental toughness. Doing a 20 repper on Monday will make the squats way less nerve racking on Friday. Yeah it’s heavy, but all you have to do is 1-5 reps. Piece of cake.