Movement is medicine you can start taking today without a prescription or a gym.

The gym membership is a fantasy about a future self with more time and a different personality. Walking is available now: thirty minutes, no equipment, no subscription, nobody watching.

Movement changes mood faster than most arguments with yourself. Ten minutes of walking will do more for a stuck problem than an hour of staring at the screen that produced it.

Attach it to something you already do. Walk while you take calls. Get down one bus stop early. Take the stairs. The habit that survives is the one needing no separate slot in your day.