Heat preparation starts with the event demand and the safety limit
Heat acclimation can improve physiological responses and performance in some settings, while precooling and per-cooling strategies can reduce thermal strain. The useful choice depends on the athlete, climate, exercise mode, timing and access to safe monitoring. An average study result is not a universal protocol.
Use the evidence cards in order
Start with the systematic review of short-term heat acclimation, then compare the cooling meta-analysis and passive post-exercise heat review. Open each study card to inspect design and population before borrowing a protocol. Choose the smallest exposure that answers the event-specific question, keep training intensity controlled, and avoid introducing heat, higher load and new fueling in the same session.
Use the heat-acclimation protocol topic to compare applications and the recovery routine to protect the next training decision.
Heat illness can be severe. Stop for confusion, collapse, fainting, chest pain, severe breathlessness or rapidly worsening symptoms and use urgent care appropriate to the situation. Medical conditions, medications, pregnancy or prior heat illness warrant qualified individual guidance.