Danish doctor Susanna Soberg, a specialist in the effects of swimming in cold water and thermotherapy, established in her research on voluntary exposure to cold the principle according to which to improve the metabolic effects of cold, one must let one's body warm up by itself. Allowing your body to shiver can also enhance the metabolic benefits triggered by the cold. The chills cause the release of succinate from the muscles and further activate the hermogenesis of brown fat. Try this protocol to increase chills, either during or immediately after exposure to cold: do not huddle or cross your arms when in the cold or after going outside. Also, do not dry yourself off. Allow your body to warm up and dry out naturally. It is true that it is hard. Unless you deliberately expose yourself to the cold on a hot sunny day, of course, you would prefer to take a hot shower and dry off with a towel after exposure to the cold, but you would undoubtedly limit the metabolic effect by doing this.