@confusedfather111 Yes to the SRDLs. Holding a band with the RDL would add accomodating resistance to make the top of the exrercise not too easy.
Why is a 90 second rest between sets important? Usually if I'm doing like say 5 sets of 10 pullups or something (or I guess squats for this example), I'll just leave like an hour between each set. Am I missing out on something by doing this? I was always under the impression that you're moving the same amount of weight regardless.