If you are suffering from occasional constipation you should stay inside and rest.

Exercise does more than tone your heart and muscles; exercise is also essential for regular bowel movements. In fact, inactivity or a lack of exercise can contribute to occasional constipation. Exercise helps constipation by decreasing the time it takes food to move through the large intestine, thus limiting the amount of water absorbed from the stool into your body. So get up and stay active! A regular walking regimen -- even 10 to 15 minutes several times a day -- can help your body and your digestive system function optimally. If you are already fit, you might opt for aerobic exercise: running, jogging, swimming, or swing dancing. All these exercises can help keep your digestive tract healthy. Of course, you should check with your doctor before starting any new exercise program.