Athletic IQ kit is made to order. Deadlines: 1st and 15th of each month. We aim to deliver within 2 weeks, subject to availability. Contact us if there is a delay. UK delivery is free. Fulfilled by Peter Spivey Ltd. Dismiss
- Fat oxidation — using fat as fuel with oxygen to make energy in the muscles.
- Exercise intensity — how hard the body is working (often felt as breathlessness or effort level).
- RPE (Rate of Perceived Exertion) — a 1–10 scale of how hard exercise feels.
