Why it can be harmful: Excessive endurance training can cause cardiac remodeling, including heart chamber enlargement and tissue scarring.
Risk: Atrial fibrillation and long-term heart rhythm disturbances.
Why it can be harmful: Overuse can raise cortisol and inflammation levels, burdening the heart.
Risk: Potential arrhythmias and heart muscle strain.
Why it can be harmful: Can cause sudden, extreme spikes in blood pressure, stressing the heart.
Risk: Acute cardiac events, especially for those with hidden hypertension.
Why it can be harmful: Leads to hormonal imbalances, fatigue, and poor heart rate variability.
Risk: Weakened heart function and reduced immune response.
Why it can be harmful: Adds thermal and cardiovascular stress, raising heart rate and blood viscosity.
Risk: Dehydration, heatstroke, and cardiac overload.
