“collateral smear”, a phenomenon caused by a hormone that makes the walls of your blood vessels strong and elastic. When you immerse parts of your body in cold water, it releases strengthening hormones and an anti-freeze hormone. These hormones ensure that the vascular system continues to work automatically. Cold showers and a bowl of cold water with ice in it are excellent starter exercises. We recommend that you try it for a month. After that month, you can continue with your cold training.
