Monica is right. Modern-day lifestyles in most industrialized countries do not include enough movement. If you walk everyday and get sun, then at least the chi and blood and "waters of the body" are moving and not stagnant. Consider the amount of time spent in front of personal computers, just sitting.
Jeremy also makes a good point. However, workouts on the machines at the gym aren't ideal for strengthening the ligaments and tendons because they isolate the muscles; use free weights instaed, and especially kettlebells (see Pavel Tsatsouline's books and videos).
Also, if you remember to use your muscles when going about the house helps. If you are going down stairs, for instance, use your leg muscles instead of letting your feet fall to the step (feel the muscles engage). Another thing is to be vigilant of your posture. Exercise your eye muscles every day if you are working on a computer a lot by going outside and looking at the distance.
Jeremy also makes a good point. However, workouts on the machines at the gym aren't ideal for strengthening the ligaments and tendons because they isolate the muscles; use free weights instaed, and especially kettlebells (see Pavel Tsatsouline's books and videos).
Also, if you remember to use your muscles when going about the house helps. If you are going down stairs, for instance, use your leg muscles instead of letting your feet fall to the step (feel the muscles engage). Another thing is to be vigilant of your posture. Exercise your eye muscles every day if you are working on a computer a lot by going outside and looking at the distance.