Heat Places Extra Demand on Horses
High temperatures increase demands on:
- circulation
- hydration and electrolyte balance
- muscle efficiency
- recovery signaling
Even when a horse “tries,” output can feel harder and recovery can lag.
Biological Effects of Heat Stress
Increased Circulatory Demand
Cooling requires blood flow redistribution; the system works harder.
Fluid and Electrolyte Loss
Sweating alters hydration balance; even mild deficits slow recovery.
Elevated Stress Load
Heat is a stressor. Vigilance and irritability can rise.
Slower Recovery After Work
Cooling and rehydration become rate-limiting steps.