1 - When you add in exercise and movement to your daily routine you improve your overall health and your sense of well-being, It's almost an instant mood booster. It gets those endorphins flowing in. Physical activity helps increase the production of your brain's feel-good neurotransmitters, called endorphins. Although this function is sometimes referred to as a runner's high, It should refer to just about any movement exercise, even a stroll in the park. Let's call it movement high, get off your butt and check it out!
2 - It's meditation in motion. I often tell this to people who tell me they can't meditate. If you can lose yourself in an activity. Whether it's running, hiking, gardening you will see that you've forgotten your day's frustrations or found a solution to a problem that's been nagging at you after being physically active in some way.
3 – If you become involved with an activity it often can involve a class, group runs/hikes/walks, clubs, competitions, and so on. The point is that it gets you out and involved in your community and helps you make new connections. Being connected to other people improves mood, lessens stress and anxiety.
Once you can start to make a habit out of adding physical activity into your life you will find that overall your mood, energy levels, and stress have all improved. This becomes easier the more you do it. An added bonus, at the end of the day you will get a better nights sleep. Less stress, lower anxiety, means better sleep.