Sports & Fitness: Performance Training, Rules & Recovery

Elite athletic performance and general fitness are sustained through structured hypertrophy strategies, sport-specific conditioning, and rigorous adherence to injury prevention protocols.

Stethoscope and heart monitor chart

Fluctuating Heart Rate

Your heart rate, or pulse, determines the strength of your heart. It is the number of times your heart beats per minute and it measures how hard your heart is working. A fluctuating heart rate is considered abnormal and could indicate an underlying issue.

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Closeup of a runner preparing his shoes for a run

Tingling in Hands & Feet When Exercising

If your hands and feet tingle while you work out, it's not a normal part of exercise. It may be something as simple as being dehydrated or indicative of a more serious problem. Consult your doctor.

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