Am I trying to hard? Dizzy/Vomiting during workouts

I get sick working out if the temperature is too cold or if I drink water that's too cold. So take a look at these other factors too. I prefer to be on the warmer side and drink room temperature water to keep me going.

I'm not sure if you're trying to hard, but what you could do is drink more water well before you work out to counteract the dizziness and wait longer after eating to workout to counteract the vomiting. Try to change those things and see if they work, then re evaluate.

If your chest is hurting just through walking, then I think the best thing to do is to just keep upping your walking for now, until your body gets used to exercise again.
I think the 30DS is more for "fit" people who wanna "up their game" so to speak lol Thats just what I think, personally I haven't tried the 30DS, and the main reason why is because I still don't think i'm fit enough (i've been exercising more for over a year now haha)

If you're out of shape, the best thing is to consult a doctor prior to doing that workout.

Turn on your AC! I would vomit too if I worked out in my living room, which doesn't have AC. It's hotter in there than it is outside!

No matter how fit I get I still have this issue on occasion. i just had it yesterday, in fact. For me, it's a low blood sugar issue, I've had it my whole life. I've found that if I plan what I eat before my workout, I have a better chance at making it through. I usually have a banana 45-30 minutes before a workout. I hydrate all day leading up to it.

But, no matter how hard I plan, sometimes I still get hit with workout induced nausea if I push harder then I'm used to. As you continue to work out and push yourself you'll find you will lessen how often it happens. For now, since you're just starting, perhaps ramp up to 30DS? Its a good workout, maybe you could take more time between the exercises, going half-speed?

And do keep doing cardio....that will help a LOT!

Good luck!

First make sure you are well hydrated before and during your workout.

Second, if this does not go away in a week or two of similar regular workouts. See a doctor! You may have high blood pressure issues.

I have high blood pressure and occasionally get dizzy. Usually after big cardio outputs where my head goes below my heart during the routine. Think burpees.

Also, if you are going to give a maximum effort and get your system ramped up for any period of time. I suggest not eating up to 90 minutes before a workout. A full tummy does not react well to things like jumping jacks and burpees!

For lasting results and the best plan for a permanent change to a healthy lifestyle -- I highly suggest professional help. Plan to see your doctor, and discuss your desire to change your habits to promote a healthy lifestyle change. At 209lbs, 5'5" - you've got a good 50-60 lbs loss to get you into the "healthy" range, and if you don't have a good plan for this, you'll get frustrated and quit before you see any benefits. You've already admitted that you are severely out of shape, to the point of extreme discomfort at exertion.

Your doctor can point you in the direction of consultation for wieght loss within your healthcare system: clinics, support groups, low-cost, or free help for nutrition and increased physical activity. You need a plan to do it safely, and consistently for optimum chance for permanant change. 30DS video, unsupervised, would probably not be part of the initial plan for success.

I can understand that you're motivated to start in, but you should really get a good plan for your success -- otherwise you won't get the results you are looking for, -- just frustration and heart-ache, because all the effort will be for naught.