Ernst Otto X.
This doesn't usually happens to me, as I don't workout with music most of the time. However, when I do exercise with music I, too, get exhausted sooner, because I tend to sing along and lose breath. I recommend listening to some songs you don't know the lyrics to, so you are not tempted to sing along. Also, try some rock instead of lofi music. It's more motivating in my oppinion.
