Everyday Fitness

Adapted from an AskMen article, and a few other odd sources:

10. Better sleep
Regular exercise has been shown to improve the quality of sleep.
9. Better aging
Working out maintains skin and muscle tone, flexibility, and aerobic capacity as you get older. Exercise also helps prevent age related conditions like osteoporosis by maintaining bone density.
8. Better health
Working out improves immune function, and stimulates immune cell production or function.
7. Better mind
Exercise does more than just boosting your body. Working out has been shown to increase memory, reaction time, and concentration. Studies show activity stimulates parts of the brain associated with attention and goals.
6. Better confidence
Ask yourself this: do you feel better about yourself after working up a sweat, or melting into the couch eating a bag of Lays. That body and strength you're working towards is definitely a confidence booster.
5. Better stamina
It may seem counter-intuitive, but working out actually gives you more energy. This helps you get through the day and help stave off naps, which can ruin a good night's sleep. If you find you don't have the energy to drag yourself to the gym, do it anyway. In a few weeks getting to the gym won't be a problem with all the added vitality.
4. Better mood
Working out relieves tension, making you feel less jittery and anxious. Endorphins released after exercise improves your mood, and causes a state of relaxation. This can help with motivation, making it even more likely that you'll eat right and make it to the gym next time.
3. Better sex
It's been proven; working out increases the drive and satisfaction of sex. Even a little regular exercise helps increase blood flow, endurance, and hormone levels that contribute to sex.
2. Better body
As if this one isn't obvious enough. On top of the physical looks, people who work out have a lesser chance of suffering from heart disease, strokes, obesity, diabetes, and yes; even cancer.
1. It's fun!
Go for a nature walk, take salsa dancing. Whatever you like doing; do it.