Tonight I did a bootcamp class that was intense, but I got through it and felt good after. On the way home, about 15 minutes later I started to black out. It started with tingling hands, then the blackout feeling (I've had this happen a few times before) so I pulled over. I laid the seat back, but couldn't shake the feeling. After a few minutes I puked. I almost could not make it in the house. Its been 2 hours since the workout and I still cant sit up without feeling lightheaded and naseous. I am in decent shape, I go to the gym and do cardio 3-4 days a week. (running, elliptical) I ate a normal diet today and was hydrated. I'm 26 with no other health issues. I also am having vision issues, almost like I'm seeing spots making it hard to type this.