Swimming can be used as a warm up session before going to your regular works. After work, swimming few laps will able to assist you cool-down, it moves blood all the way through your muscles helping them to recover the strength, and relax you. If your weight is 150 lbs. then you will burn nine hundred calories in 1 hour by swimming only 30 minute, a mile. On the other hand, many swimmers don't swim quick and for that much distance. You can even do group workouts and water aerobics which are very helpful for health and weight loss. As you talk, make challenges with each other, and share techniques sometimes is always rewarding experience. There are some other psychological advantages of swimming as well. Relax while swimming with a low effort. Allow your mind to wander, just focus on nothing other than rhythm of stroke. If you focus strongly on one thing then you enter meditated state which will lead you to comfort, later you may leave water and are set for entire day. Many peopl...