Human bodies are designed for regular physical activity. The sedentary nature of much of modern life probably plays a significant role in the epidemic incidence of depression today. Many studies show that depressed patients who stick to a regimen of aerobic exercise improve as much as those treated with medication.

I get up at sunrise. I'm a Buddhist, so I chant in the morning. My wife and I sit and have coffee together, but then it's list-making time. I have carpentry projects. We have roads we keep in repair. It's not back-breaking, but it's certainly aerobic and mildly strenuous.

Our species uses music and dance to express various feelings: love, joy, comfort, ceremony, knowledge, and friendship. And each one is distinct and widely recognized within cultures. Love songs cause us to move slowly and fluidly, for example, while songs of joy inspire us to dance in a full-body aerobic way.

Physical activity can improve immunity, concentration in the classroom and aerobic fitness.

You think aerobics is not a cool sport? I think you are wrong. It requires amazing discipline - flexibility, fitness, knowledge. And you have to do it with a big smile on your face. Also, I once performed in front of 10,000 screaming women. I tell you something, I'd rather do that than kick a ball around in front of a few men.

Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement.

As Mick Jagger will tell you, performing is an aerobic work-out. I've got the bass guitar, which is the heaviest of all the instruments, and I'm a little girl, in boiling-hot leather under the lights. You have to keep the fitness level up if you want to look good up there.

My workouts include aerobic exercise for a healthy cardiovascular system strength training to maintain muscle tone and bone density core strength exercise for a stable mid-section and stretching to maintain mobility.

Poetry seems to have been eliminated as a literary genre and installed instead as a kind of spiritual aerobic exercise - nobody need read it but anybody can do it.

I get up at sunrise. I'm a Buddhist so I chant in the morning. My wife and I sit and have coffee together but then it's list-making time. I have carpentry projects. We have roads we keep in repair. It's not back-breaking but it's certainly aerobic and mildly strenuous.

Now I say that if you run more than 15 miles a week it's for something other than aerobic fitness. Once you pass 15 miles you do not see much further improvement.

I have been through various fitness regimes. I used to run about five miles a day and I did aerobics for a while.