Vomited after training session with Personal Trainer?

Right, you just pushed too hard.

Combine that with the fact that you just started exercising again + you only had 500 calories for breakfast and lunch total = your body is not having a good time.

I'd suggest easing into things a bit slower.

I work with a fitness company and for the clients we usually recommend just focusing on getting your eating right for the first month. Then start thinking more about exercise. It can be challenging to try to change EVERYTHING at once.

Keep at it!

You pushed it too hard. Just let him know and he will adjust. I've done it a couple times when I was new to the gym.

This. Also, eat a couple hours before you work out, with protein, fat and carbs. Might also want a light snack an hour before you workout. I like a 100 cal pack of almonds. As a young male, you probably need more than that, but maybe the guys on here could make a recommendation. Make sure you hydrate both before and during workout.

I have worked with a trainer for a couple of years, and it has been well worth it. Congratulations for deciding to take control of you health and life!

I used to get nauseous after extreme circuit training.. don't do it anymore and I feel fine. I mean sometimes I'll get a little bit of the shakes, but that's nothing a little rest won't fix.

The only problem I see with not having a personal trainer, is that I truly don't know how to workout properly. I want to maximize my experience, and knock off all the fat, while still building some type of muscle. I also know that having more muscle means having a better Metabolism, thus burning more fat, so it works for weight loss as well. I don't know how to do the "muscle confusion" tactics or anything like that. What I have been taught, is to do my upper body one day, and lower body the next, and alternate like that....but it turns out that I might of been informed with bad information that could lead to exhausted muscles and nothing coming out of it. Does anyone have any advice for a decent work out plan, or where I could start? I have been running on the treadmill, on the bikes and elipticalls, and I've also do some free weight training by myself, but It's all in random order with random reps and sets.

There's a group on here called "Eat, train, progress"....go to "groups", hit search and enter name. Lots of good advice from experienced people.

Based on your description, I suspect your symptoms were provoked more by the duration of the session then the intensity, although the intensity was still probably a little too high.

There is always pressure on younger, less experienced trainers to try to impress the client by having them do a lot of different movements. They do this because they don't know any better, because they are trying to show how "special" they are in order to get your business, or a combination.

If you are just starting out and unfit, then you can bottom out even with a moderate workout. Sometimes it's due to low blood sugar, but more often it is due to fatigue. Humans have much more capacity in their blood vessels than they have blood to fill. During vigorous activity, the body must shunt blood from one area to another, restricting flow to non-essential areas and opening up flow to working muscles. Beginners often become so fatigued that this mechanism starts to break down and blood pressure starts to drop, leaving you feeling the way you did.

It's not necessarily the trainer's fault, although it could very well be--I can't really say, not having seen the workout. Good news is that the fact that it happened once does not usually mean you are predisposed to having it happen again.

Someone who is unfit and just starting out can improve with relatively low levels of effort. Personally, from what you described, I would say that about 1/2 of what you did is unnecessary at this point. There is zero need for you to be doing planks or med ball slams or anything like that. About 8 exercises using major muscle groups--machines or cables or some beginning functional exercise--for 2 sets of 10-12 reps will start you making progress. If you tolerate it well, you can bump it up a little each time gradually increase the sets, weights, and complexity of the workouts.

This can be difficult for a trainer (and the client) to accept at first. But both have to be patient and build a foundation that will allow the client to move into heavier lifting and more challenging workouts safely, confidently, and without injury.

(Edit: I just checked your age and that's probably another reason why the trainer pushed you a little bit harder at first--you can still start out with the basics, but there's a good chance you can progress quickly).

I've been around high-performing & Olympic athletes a lot and have seen them throw up after pushing themselves hard. Usually when trying to beat another athlete in a hard workout session.

You pushed yourself to the limit. The mere fact that you have the mental drive to do this says a lot about your character and your commitment!

You are going to be fine, and you will do well in your fitness journey.