Sweat production during cycling depends on many factors. Only a relatively small proportion (around 20 per cent) of the energy produced by the body is converted into mechanical energy, the rest is heat energy that has to be released in order to maintain body temperature. This in turn depends on the outside temperature, clothing and body weight, in particular the relative body fat content. Heat is released as radiation, convection and sweat. If the subcutaneous fat layer is too compact, this considerably restricts the release of heat via radiation and sweat production is triggered. Furthermore, heat release depends on the level of exercise - the higher the training intensity, the more heat energy is generated and the more sweat is produced. This cannot be determined by the pulse rate, as there are considerable individual differences for the individual training areas. If you are slightly overweight at 93 kilograms and 1.84 metres tall, it is completely normal to sweat a lot. It is important that you always have enough isotonic sports drink with you and regularly drink small amounts - before you feel thirsty - to prevent a drop in performance.
