Built for Bad Circuit Warmup?

CT, 2 weeks into program, starting to get some slight aches and overall tightness. For warm up I do agile 11 and a couple warm up rounds prior to working rounds. Do you have any additional suggestions for good warmups? Peri- nutrition is there. I’m 37 yrs old, just wonder how much is father time or could I do better warm up? Hope to hear from you

@Tripleakes: banded distractions (see the Kelly Starrett YouTube channel) do wonders for me. It gets your joint capsule properly set again so it’s not tight, and your muscles follow. It’s really a matter of the position that feels tight or you have trouble getting into that will determine which mobility exercise is for you. When I do those and stay tight, use good form and technique, I feel pretty good.