No equipment to exercise? No need, watch this video of some super-strong men illustrating 44 of the best bodyweight exercises.
Just make sure you warm-up effectively before attempting any of these and only try the more advanced moves after getting proper instruction from a trainer.
Too intense for you? Why not take a look at some of our structured fitness programmes and find one to suit your fitness level.
(Health24, January 2013)
Mistakes to avoid in the gym