Need advice, nearing blackouts during exercise

takirb

So today is the 2nd workout session in a row that I had to call it quits before I was completely done with my routine at the gym. My workout routine is this -

Mon/Wed/Fri - elliptical for 45min, typically burning 500 calories or so
Tues/Thur - Weight lifting for an hour and a half during lunch break
Sat/Sun - both elliptical and weights, or one then the other depending on time available

Just yesterday, I was 37 min into my cardio, when I suddenly felt really weak and my vision seemed to get weak too. Fearing a blackout while mid-stride in a crowded gym, I immediately stopped and sat there in disappointment as i clearly wasn't too "tired" to finish. Then today, on my last set of my last exercise (triceps), I felt weak again just like yesterday and had to stop. Both times I've made sure my breathing was controlled, as i originally thought I wasn't breathing enough or maybe too much. Breathing had no effect on the weak feeling.

I'm 32yrs old, 205-208lbs, and have been doing this routine for nearly 3 weeks now. I stopped smoking 6 weeks ago, and figured I'd ride this "health train" far as I could, hence the gym time. I used MFP to lose almost 30lbs before, by cutting calories and the same elliptical routine, and never had this problem. I pigged out on food tonite thinking maybe I wasn't eating enough, cause I'm actually worried about my cardio session coming up tomorrow. Anyone got any advice as to what Im doing or not doing correctly? Should i be downing a protein shake or something before the gym, energy bars, or? I believe my food and exercise plans are available to public in my profile if anyone cares to eyeball my diet for lack of vital foods

suzibanshee

From looking at your diary, you're not eating enough. I would talk to a doctor if I were you.