Target muscle groups: biceps femoris, quadriceps femoris, gluteus maximus
Place the sandbag in front of your toes, with the grip facing up. Feet shoulder width (or slightly wider than shoulder width).
1. In the same squat position, place your weight on your buttocks, with your knees pointing in the same direction as your toes. Apply force to flatten your back and grab the sandbag grip.
2. Apply force to both the legs and back simultaneously, keeping the knees straight and the body straight. Pay attention to maintaining a flat back during the rise process.
3. After standing straight all over, follow the original motion trajectory and slowly lower the sandbag, remembering to place it on the lower back and back leg muscles.
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