They can be bad for your lower back and have little impact on your lower abs. … The reverse crunch also puts your abs under tension for a long period of time, maximising the benefits to your stomach muscles – if it’s done properly…24 Kas 2021
They can be bad for your lower back and have little impact on your lower abs. … The reverse crunch also puts your abs under tension for a long period of time, maximising the benefits to your stomach muscles – if it’s done properly…24 Kas 2021