Does flexing abs while sitting?

Related questions

1. How does flex time off work?
2. What can you use flex spending for?
3. What does physiological in nature mean?
4. What does Flex mean in slang?
5. What happens to my flexible spending account if I lose my job?
6. What does no flex zone mean?
7. Is physiological the same as physical?
8. What is Flex Zone drawer?
9. Is flex a root word?
10. What does small flex mean?

Tags

1. #strengthen
2. #stomach
3. #sitting
4. #there
5. #abdominal
6. #improve
7. #exercises
8. #repeatedly
9. #balance
10. #muscles
11. #muscle
12. #while
13. #stability
14. #tightening
15. #simple
16. #coordination