No matter how sparse and how good your diet or how many antioxidants you take, no matter how conscientiously you deal with stress and how enthusiastically you exercise - all of which are central to ageless aging - it can be helpful periodically to spring-clean your body from within.
Controlled fasts are not the only way of doing this. In fact I have come to believe that they are not even the best way.
The natural-law approach to age retardation and the long tradition on which it is based also offers a number of other simple methods.
Some - such as a spring-clean semi-fast or the sauna - are helpful when used every few weeks, while others, such as techniques for improving lymphatic drainage, can be used to advantage every few days or even more often.
The whole purpose of spring-cleaning is to stimulate your body's eliminative capabilities so that any sluggishness in the blood and lymph circulation and any stasis in the tissues is cleared away. Then whatever toxicity may be present - heavy metals and cross-linkers for instance - can be broken down and eliminated via the skin and lungs, bladder and colon before it can cause degenerative damage and premature aging to your body.