Many programs that I've come across (e.g. 100 push up challenge, 7 weeks to 50 pull-ups, etc.) prescribe a minimum rest time between sets and mention that you can take longer breaks if necessary, but when is it necessary?
For such program, would it be more beneficial to wait as long as I think is needed to perform every rep, or to keep the resting time as close as possible to that which is prescribed and repeat a week if I fail to perform the minimum number of reps, or some other variation of this?
My goal is mainly to achieve as many reps as possible in one go (training for a fitness test).