[khoslaam]

During the TI course, I was told, be streamlined, body pointing to the side of the pool i.e. vertical, one shoulder peaking out of the water, head down, leading arm in front i.e skate position and just before hip rotation. The question I have is, can I lie a little more flatter in the water i.e. more horizontal, but being streamlined of course. Is their a rule of thumb I can used for this e.g. angle for rotation can be between 45 and 90 degrees. My reason for asking is that, I find my left shoulder and chest muscles getting very sore. Before TI, I used to swim flat in the water i.e. horizontal, shoulder or chest never hurt....although my stroke was not very effective :) Any insight anyone?