>>138830
my abs are tightening up after about an hour of core workout.
Now, tomorrow, I want to do 2 hours of drills. Things like prone crawl, bear crawl, crab walk, etc.
Does anyone have advice for that? for length of workout and trading off on different exercise? warmups/cool downs?
for stretching I always do about 15 mins of all the stretches I know.
thx in advance