1. Raise your head and bend backward.

2. Raise your head and bend it backward.
3. Raise and bend your head backward.
--------------
Are they all the same in meaning and grammatical? Do they have any difference?

2 answers

1. means to raise head and implies to bend body backwards
2. means to raise head and bend head backwards
3. same as 2
rfvv, I agree with "random guy", whoever he is. :)