Cooling strategies

Cooling strategies aim to reduce an athlete’s core temperature before, during or after exercise in hot environments. They include a range of methods designed to slow the rise in body heat and maintain performance.

Keeping Heat at Bay

Heat strain can cause fatigue, reduce power and increase the risk of heat illness. Scientific reviews of endurance training in the heat show that immersing the body in cold water is one of the most effective pre‑cooling methods. Ice slurry ingestion—a semi‑frozen drink—also lowers core temperature and is more practical for outdoor events, while cooling garments such as vests or sleeves are less effective. External cooling using ice towels, ice baths and cold water sprays helps remove heat from the skin, and internal cooling through cold fluids slows heat storage. Endurance events in hot conditions often benefit from combining these methods during warm‑up and breaks. Athletes should avoid overcooling because shivering uses energy and can negate the benefits. Tests in training help determine which techniques feel comfortable and work best for individual sweat rates and conditions.

Chill Tactics in Action

Examples of cooling strategies include soaking in a cold bath for 10‑15 minutes before a race, sipping an ice slurry drink during warm‑up, wearing an ice vest while waiting at the start line, pouring cold water over the head and neck at aid stations, and holding a chilled towel or frozen water bottle against the wrists between intervals. During long bike rides, riders might carry insulated bottles filled with partially frozen drink to sip regularly. Athletes competing in team sports can rotate to shaded or air‑conditioned areas during breaks. These practices need to be trialled in training to ensure they do not cause discomfort or gastric upset.

Short cooling periods can help preserve power output and delay exhaustion in the heat, but they are not a substitute for acclimatisation, adequate hydration and pacing. A personalised approach using a mix of external and internal cooling methods provides the greatest benefit without causing shivering or discomfort.

Related Terms: Tonicity, Hypotonic, Hypertonic, Scheduled drinking, Isotonic