1. Raise your hands to shoulder height.
2. Lower your hands to foot height.
3. Lift your right hand to nose height.
4. Lift your left hand to eye height.
5. Bend your body left, and then bend your body right.
6. Bend your body to the left, and then bend your body to the right.
(Are they all grammatical? Would you check them and correct errors, please? Thank you.)
1 is fine.
2 would be far better if you said, "Lower your hands to the floor" or "Touch your toes."
3 and 4 are OK.
5 and 6 would be better if you simply said, "Bend to the left, and then to the right."
(These are all exercises or physical instructions, right?)
All the given sentences describe various actions, but there are grammatical errors in some of them. Here are the corrected sentences:
1. Raise your hands to shoulder height.
2. Lower your hands to foot height.
3. Lift your right hand to nose height.
4. Lift your left hand to eye level.
5. Bend your body to the left, and then bend your body to the right.
6. Bend your body to the left, and then bend your body to the right.
By following these instructions, you would be able to perform these actions correctly.