is it okay for your chin to dip below the water during the no hands treading?
i'm naturally dense and find it hard to float (my legs sink like bricks so i have to keep them constantly moving) which means that it's quite difficult to keep my body very high out of the water when treading, especially without my hands. this happens even on a full breath. i've managed to tread fine with my chin up towards the sky. did your instructor tell you that you can/cannot do this? my training is in 4 days so i just want to know beforehand whether that's allowed or not.