A doctor has shared a simple exercise he claims helps tighten and flatten your stomach - and it's not sit-ups. Taking to his YouTube channel, which boasts 13 million subscribers, Dr Eric Berg DC ...
The belly is an area that typically needs a bit of extra TLC when it comes to gym time. Fear not, though, because we've done the research and are here with the best core-sculpting exercises to tighten ...
A doctor has shared a simple exercise he claims helps tighten and flatten your stomach - and it's not sit-ups. Taking to his YouTube channel, which boasts 13 million subscribers, Dr Eric Berg DC ...