What is the healthiest exercise?

Related questions

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Tags

1. #breathe
2. #pressure
3. #exercise
4. #heart
5. #cardiovascular
6. #swimming
7. #running
8. #reduce
9. #disease
10. #exercises
11. #blood
12. #system
13. #diabetes
14. #dancing
15. #harder
16. #cancer
17. #activities
18. #aerobic
19. #lower