@timb2020 Your maximum number of reps should be between 10 and 30 and you should do close to that number. It's called reps in reserve (RIR) training. For example, if you can do 20 reps and you train with 3 RIR, you'd do 17 reps.
@bobsacamano As long as you reach muscular failure (ideally staying within 5 reps) in ideally 10-30 reps you should be fine to build muscle. The challenge of single leg exercises as I see it is that they often fail due to balance or fatigue in other muscles than the prime movers.
@zn2309 From all I've read on sleep science that's a load of hogwash. All my life I've been a bad sleeper and I've been perpetually tired. Are you telling me insomnia means my brain is ultra-efficient and I'm functioning as well as everyone else?.