Assistance exercises for the big four.
I'm doing a two day version of 5/3/1 to supplement to my sport.
My problem is that I have zero clue what to do as assistance exercises. So far I've been doing some pulling to balance out the pressing and some core work.
So basically my question is what assistance exercises should I do? How many reps and sets? and how should I progress on the assistance?
Also if anyone have some good advice/exercises to help with bad posture (anterior pelvic tilt, forward rounded shoulders) it would be great.