Diet Re-boot

So I hit the gym for the pool on Thursday... and let me tell you swimming is hard.

Parts of my body were sore that I hadn't been used in years. But I pushed through the pain and did some laps. Then I got out of the pool and felt like I was going to pass out, for the second time in a month.

Last time it happened I started drinking more water and taking my vitamins, but now that it's happened again I'm questioning my diet.

Today was grocery shopping day and I loaded up on more protein, fruits and veggies. A lot of what I think the problem is that I workout on an empty stomach. But if I eat before I hit the gym I get all vomit-y.

So I picked up some protein bars to eat in the AM. Hopefully it will be enough to keep my from getting light headed, but not too much to make my stomach icky.

What about you guys, eat before working out or on an empty stomach?