Created for daily training and competition, GU Energy Chews pack energy-dense calories in a portable packet to help sustain energy demands of long duration activities. The 90-calorie packet contains carbohydrates to keep you fueled while delaying bonking by sparing your glycogen stores. Sodium, the primary electrolyte lost in sweat, aids in hydration by maintaining water balance. The branched-chain amino acids (leucine, valine, isoleucine) may reduce mental fatigue and decrease muscle damage. ELECTROLYTES maintain water balance and aid in optimum hydration. CARBOHYDRATES deliver ready-to-use energy and delay bonking by sparing glycogen. AMINO ACIDS educe mental fatigue and decrease muscle damage. CAFFEINE enhances performance by increasing focus and concentration and decreasing perceived effort during exercise. Each sleeve of Energy Chews contains eight pieces (two servings) and come in boxes of 18 sleeves (144 pieces). Each serving of four-pieces delivers 80 calories. Consume half a sleeve of Energy Chews (four pieces) 5 minutes before and every 45 minutes during activity. Available at Sportsfuel.