Challenge your body with these short, explosive movements

CrossFit enthusiasts are required to do this standard box jump, i.e. jump and land on top of the box. — Photos: Pexels

Every once in a while, you need to give your body a challenge to make it work more efficiently.

Those from my generation would recall simple pleasures during the school holidays: we rolled down hills, jumped to see who could reach the highest tree branch, hopped over frogs and played skipping games with ropes fashioned from rubber bands.