Our feet and ankles endure a lot of stress and strain, so here’ s a fun exercise to build them up. Get a dozen marbles and a plastic cup. Put them all on the floor. Sit down in a chair that lets you move around, and then pick up each marble with the toes of your right foot—one by one, drop them in the cup.

Then dump the marbles and do the same with the toes of your left foot. You may want to add to the fun by timing yourself and trying to set speed records. Whatever you do, try not to “lose your marbles.”

For exercises that fix pain and energize your body: