6분 투자로 식스팩을 ...

20 knee up

20 leg raise

20 cycels
rest 10 - 20 seconds
20 reverse crunch

20 leg on couch crunch

20 hip thrusts

rest 10 - 20 seconds
20 cross crunch (10 each side)

20 reach and touch

20 cross leg reverse crunch
repeat 2 - 3 times