Do your workout.
Although most of us are not a professional athlete, we all need workout because it makes us better—physically and mentally. But it doesn’t mean that we all need to do workouts like a pro. Walking outside for 15 minutes would be more than enough, or 10 push-ups would be sufficient, if you haven’t done it. The point is to do a bit of extra; go a bit further than your current limit.
And we had better not forget that our brain also needs workout, otherwise it will weaken. Regardless of your age, learn something new. Keep learning. You sometimes get upset or frustrated—like I did when I was brushing up on the basic of Final Cut Pro X—but that’s a sign that your brain is being redeveloped. Doing a bit of extra always works.