If you started 2017 with a resolution to lose weight or get fit then you may have found that you need some extra help and motivation by now. In fact, 80% of people who join the gym in the new year will quit by the second week in February and generally speaking, 50% of people who join the gym will quit within six month

https://theconversation.com/qanda-how-often-do-we-need-to-go-to-the-gym-and-other-exercise-questions-answered-74094