Fitness Planner Sit-ups: benefits, how to do, correct posture

Sit-ups strengthen the core, improve posture and help get rid of niggles like backache. But if you are only doing them to reduce belly fat, there
Sit-ups strengthen the core, improve posture and help get rid of niggles like backache. But if you are only doing them to reduce belly fat, there's research to show that spot reduction is simply not possible.

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