Your Action Plan: Set a 25-minute timer. Every time it goes off, knock out 10 pushups, 10 squats, or a minute of jumping jacks. Do four cycles total. Jot your reps in any notes app or habit tracker. (2/4)

Pro Tips: Try three deep breaths between each movement burst. It helps push more oxygen to your brain. If you're stuck in meetings, go with seated calf raises and glute squeezes. Nobody will notice, but your brain still gets the benefit. Rate your focus on a simple 1-10 scale before and after each round. You'll feel the difference within the hour. (3/4)