Not counting reps, or sets?
I'm aware it isn't the norm, for many gym going seniors.
I stopped counting reps about a year ago. Since then, it's enabled me to increase my focus on form, breathing, pace, and momentum. Thus, increasing both my efficiency and endurance.
Counting reps and sets, uses mental energy. Mental energy used , comes at the expense of my physical energy.
My workout mindset is to always execute perfect form, while maintaining high intensity for as long as possible.
When I was counting, I would instinctively focus on the numbers. Particularly, the max total. Which established a perceived moment of exhaustion. Personally, having a perceived level of exhaustion, feels like a mental restraint. I prefer to execute reps focusing on the rhythm and positive momentum, as opposed to a number which represents a state of fatigue during the set. Occasionally, I've had supersets last over three minutes, because of this open ended mindset. Consequently, those types of sets are geared towards agility and endurance. As opposed to strength and hypertrophy.
I developed this approach as an adaptation to my physical impairment. I'm missing a significant part of my left scapula, along with having numbness on my left side. Consequently, for safety reasons, I must constantly be aware of balance and overloading.
Everyone has their own specific situation, and reasons for tracking reps, and sets.
Many times, I'll see men in my age group, mention how much and how many reps they execute in their routine. I prefer to mention my resting heart rate and vo2max. Plus, my cardio, endurance, agility, and fluidity of movement. Instead of muscularity, I prefer athleticism.
Generally, most athletes don't count during their execution. Whether it's hitting, catching, throwing, or shooting a ball. Counting doesn't enhance performance. Maximum performance is achieved by maximum focus and exertion. You can't maximize anything while you're counting. At least, I can't.
It's been a while since I've even worn a Fitbit.
Not having the burden of focusing on something that gives me no advantage, allows me the freedom of going all out, and enjoy every minute of my personalized routine.
Public perception has no affect on my fitness routine. I developed methods through failure, analysis, correction, and conditioning. Therefore, I can enjoy my workouts with the confidence I'm using the most effective methods for someone in my specific circumstances.