dizzy while doing cardio

I have been going to the gym now 3 days a week since october. For some reason while i am doing my cardio on the eleptical i am getting dizzy. Usually it is 20 minutes into my workout. Sometimes I even get dizzy while doing weights. I usually break my cardio up. I do some cardio and then do my weights and then finish with more cardio. I have been doing 1.5 hrs on cardio. Any suggestions on why i might be getting dizzy and what to do about it?

I would get like that sometimes, usually when I went to the gym on am empty stomach.  Eat something small or drink a protein shake before heading out the door.

 

Keep hydrated while working out too....that could be another cause of the dizziness.

I had the same problem and it was low blood sugar.
As soon as I hit the 25 minute mark i would just lose all energy.
Try Gatorade or G2 if you can handle it.
That will help.

My first guess is also low blood sugar.  It's really important to fuel before working out - usually with carbs for usable energy.

Recovery is also important.  You should also eat something high carb 30-60 minutes after your workouts to restore glycogen in the muscles.  That makes sure you have enough energy for your NEXT workout.  As you keep working out, your body will start storing more glycogen, but it takes a while to build up, and it's important to have enough fuel to build it up.

It might also help to have something with you at the gym for quick energy.  We get so used to worrying about eating too much, that sometimes we don't eat enough.

Linn

Thanks those ideas really help me. I will give them all a try next week. you are right i am afraid of eating to much maybe i am not eating enough. With my cardio alone i am tending to burn 900-1000 calories. I will try some gatoraide or try taking a protein bar with me.