First post, long time reader

Hello. I bought my new road bike the other day. I love it. I went for a ride with my boyfriend who also just bought a bike. I've been riding all my life but was always hybrids. I'm doing the round the bay for the fifth year this year and am super excited to use my new bike

Does anyone else seem to have trouble breathing when riding? I'm not a smoker, never have been, but it is mainly when I am riding up hills. I get a sharp pain behind my sternum, and I struggle to expand my lungs enough to fill them up. It is like I need to yawn, but I can't seem to breath in enough. I can breath fine when I'm not riding. Perhaps I'm still quite unfit in terms of breathing properly while riding.

Does anyone have any suggestions on the correct method of breathing whilst riding up hill?