Rooibos & Orange Tea Hydrate 'sports tea' is naturally caffeine free. Caffeine acts as a diuretic, which is useful for other functions but its absence from this blend makes it perfect for hydrating the body. Use throughout the day or specifically after exercise to quench thirst and refresh. Rooibos & Orange Tea Hydrate 'sports tea' is naturally caffeine free. Caffeine acts as a diuretic, which is useful for other functions but its absence from this blend makes it perfect for hydrating the body. Use throughout the day or specifically after exercise to quench thirst and refresh.