Do 10 burpees in the yard.
Why it works: Cardio exercise wakes up your heart and your muscles and can set your mood on an upward trajectory that lasts until nighttime (and may even extend into a more restful sleep). Doing it outside seems to compound the effects. If you don't have time before work for a trail run,
this jumping-squatting-planking move, which can be done in a few minutes and a few square feet of outdoor space, is the most efficient cheat.
Strange, true thing that might convince you: Just
5 minutes of exercising in nature can enhance your mood and boost your self-esteem, researchers found (that's at least 20 burpees).
