Lately I have been having a problem doing my cardio. I woke up today at 11am had a bowl of oatmeal, egg whites. I drank a good amount of water and started my cardio like around 1pm. 15 minutes on the treadmill, then i was trying to do 15 on the stairmaster. I got to 10 minutes and I felt like puking. I ran to the bathroom and before I made it there, everything was already coming out. My entire breakfast was sitting in the sink.
My question is, 1. what might be the cause for this? 2. Since my entire breakfast was thrown up, I knew i needed some nutrition fast, so the only thing i could think of was downing a protein shake. so i did that. how do i make up for the breakfast i lost?
p.s. i do drink water during cardio. I drink a good amount of water during my workout/cardio.