I went running and I did something wrong.....?

Question

I held my breath as I sprinted a good 500ft. When I stopped, my heart was beating so hard that I heard/felt a loud clicking noise in my ears everytime my heart beat. What could this be from? Thanks

Answer 1

Your heart was pumping so hard for the oxygen that it was lacking that you could hear it.... next time breathe!

Answer 2

Don't worry this happens sometimes when I give it all I got on a run. Just dont hold your breath, you should always be breathing while running anyways.