I was working out today for my first time in a few months, and after like 20 minutes of cardio and weight lifting i felt like i was going to pass out. I was really lightheaded and dizzy. I had to sit down for like 5 or 10 minutes while drinking some water. Then i finished working out and I got a protein drink and right after that i just had to sit down because i felt like i was going to puke and i was going to faint. So my question is am i feeling like this because i did not have enough water, not enough food? or am i really out of shape after not exercising at all for like 5 months. Or is it the crohns... lol