Monster Rehab Protean + Energy. Combining the recovery benefits of protein (no inferior soy here!) with the hydration and energy you need to recharge. Monster Rehab Protean packs a triple threat that quenches thirst, hydrates like a sports drink, and brings you back after a hard day's night. Monster Rehab Protean + Energy: Re-Fresh, Re-Hydrate, Re-Vive, or in other words, Re-habilitate with a killer mix of tea, protein, electrolytes, and our bad-ass Monster Rehab energy blend to fire you up.