How long can the average person do a plank?

Related questions

1. What are the benefits of side leg raises?
2. What age do women's hips widen?
3. Do women's hips widen after childbirth?
4. Can exercise make your buttocks bigger?
5. Are leg lifts bad for your back?
6. Are leg raises bad for your back?
7. What muscles do lying leg raises work?
8. Does leg raises reduce belly fat?
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10. Are Side leg raises effective?

Tags

1. #doing
2. #healthy
3. #workouts
4. #something
5. #either
6. #wrong
7. #minute
8. #should
9. #seconds
10. #plank