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SIS BCAA from Science in Sport is a branched-chain amino acid supplement designed to support athletes before, during and after intense training sessions. BCAAs – typically leucine, isoleucine and valine – are widely used by endurance riders and racers to help protect hard‑earned muscle, reduce the feeling of fatigue and support recovery after long hours in the saddle. This makes SIS BCAA a smart addition to your nutrition plan whether you are preparing for a big sportive, stacking back‑to‑back training days, or simply looking to get more out of every ride.
Easy to take and simple to integrate into your existing fueling routine, SIS BCAA is formulated with the needs of cyclists and endurance athletes in mind. It can be used alongside your usual energy drinks, gels and bars to help maintain performance on demanding climbs, interval sessions or long base miles. Regular use around key workouts can support muscle repair, helping you feel fresher and more prepared for your next session. Ideal for road, MTB, gravel or indoor training, SIS BCAA is a versatile tool in any performance‑focused cyclist’s kit bag.
