Dear GB friends,
I please need some tips on FL/PE2 the bent hollow body rock.
Got some problems with the timing of the rock, how much does you knees have to be bent
what am I doing wrong if I feel it in my lower back? I tried to squeeze my abs tighter and make the movement slower, but it doesn't really help.
Should I stretch my hip flexors first before the exercise?
thx so much
Cliff