feel exhausted and no energy after initial workout

Usually that's a sign that you may be pushing your body a bit too hard.

What amount of protein, carbs and fat are you consuming daily? My first suggestion would be to increase your protein and fat intake, then try an energy boosting supplement if all else fails.

http://www.webmd.com/vitamins-and-supplements/lifestyle-guide-11/energy-boosters-can-supplements-and-vitamins-help?page=1

http://www.huffingtonpost.ca/2012/08/15/foods-that-boost-energy-_n_1779032.html

Definitely make sure you're consuming enough water. Otherwise, being tired after your first workouts is normal, you're pushing your body beyond what it is used to.

Thank you all for quick reply. Also my muscles start giving me lots of pains specially legs and shoulders.

It will get easier!! Stay hydrated and if you have a lot of muscle pain I find Tylenol or Aleve works well. But after a few weeks you will probably have less pain. Maybe choose lighter weights or dial it back a bit. When I was restarting a workout regime after long periods of inactivity I went really, really hard at first. So much pain! Better to go at a pace you can maintain and build from.

Coconut water has calories but is good for electrolytes and doesn't contain the excess sugar and weird florescent dyes of sports drinks.

You are probably working out too hard.

Web search "target heart rate" and use it to guide how hard to exercise (for your aerobic activities, walk, run, swim, cycle...).

I am not an expert but have had my fair share of stuff when exercising. I agree with others that the muscle pains could be hydration issues. Were you very active before you started this routine? You might want to take it slower.

I recently started stepping up my walking time and felt lethargic, so I made sure I had some extra protein at my next meal and that seemed to help. For me, I am not dieting anymore and am working on changing habits, so I'm taking my time to see what works and what doesn't. In the past I have made the mistake of wanting to lose weight fast and furiously and of course couldn't keep up the momentum.

Above all, take care of yourself. The fact that you have stars in front of your eyes and aches and pains could be a sign that you're pushing it or you have some other condition. OH, I JUST THOUGHT OF SOMETHING....I take blood pressure meds and I don't take them right before I exercise because it seems to cause a big drop in my BP and I've gotten dizzy. Just a thought...

I think everybody here is right on. Track that diet and make sure you are getting enough protein in your diet. Also check on your iron intake. If you have a borderline anemia, you can feel lethargic.

There is a lot about you that we don't know, plus most of us are not doctors!

If you don't have the ability to have a doctor check you out and tell you what is safe for your size and your current state of fitness, or even if you do, here are a few other ways to learn how your body responds to exercise.

Take your pulse before you start and after a phase of your workout is completed and write it down. Logging your pulse is a good way to track your progress. The more accustomed you get to the exercise, the less your pulse will increase when you do the same exercise at the same intensity.

Use the "talk test." If you are so out of breath that you cannot talk for more than 30 seconds after stopping an activity, you are working too hard.

Plus what everyone else said about nutrition and hydration.

If your heart starts feeling like it will beat out of your chest, slow down and ask yourself was that a healthy challenge or a scary cliff feeling? Each person perceives exertion in their own way, no one but you knows how you feel.

I would suggest going to your doctor. The shooting star lights you're seeing, combined with the no energy as well as the muscle and joint pain could indicate that your sugars are getting to low during your workout. (it also could indicate that you have a cardiac issue going on. My suggestion would be to make an appointment with your doctor asap and get a routine physical and blood work done. I would also since you are there anyway talk to your doctor about your diet and work out regimen. Good luck.

That sort of sounds like dehydration to me. Or possibly hypotension.

Make sure you are getting in lots of water, and also enough sodium. Add a pickle or two to your diet to boost your sodium intake, and see if that helps.

The heart beating so hard suggests that you are either working out too hard for your current level of fitness and need to dial it back, or may have a medical problem--of which there are so many possible causes for your symptoms (almost all easily treated) that it is not worth listing them.

The most likely outcome of a medical visit is they will either say "You're just out of shape" or "Here, take this pill." If the answer is "Take this pill", it is possible that you won't need to take it any more once you lose weight (cholesterol, blood pressure, and diabetes issues sometimes resolve upon weight loss, for example).

Point being there's no need to fear the doctor visit because the diagnosis is likely to be something easily treatable and not immediately life-threatening (the three problems I listed can become life-threatening if left untreated over years).

So it is best to go to the doc promptly, deal with any medical issues, and come home to do your workouts at an appropriate pace for your current level of fitness.

I always suggest people use the target heart rate method (many online places to read about it) to set the intensity of their work-outs. The heart rate method self-adjusts to your current level of fitness and also to how your body is performing on any particular day--the target heart-rate zones won't change, but if you didn't sleep enough last night, or over-trained yesterday, or are fighting off a cold that hasn't set in with symptoms yet, it might take less work-out to reach your target zone. As you become more fit it will take more intensity to reach your zone, and so you'll incrementally adjust your work-out intensity along the way as you become fitter.

My first Suggestion would be to up your water intake and make sure you are eating enough, and also making sure you aren't eating complete trash (I.E. Pizza everynight, fast food, etc....) This is a problem tons of people have, and I have had many times. If you try increasing water and that doesnt work, then I would suggest something to replace lost water and electorlytes and give you that boost you need. I have a couple suggestions down below for this.

"rehydrate" and "rehydrate gel"

which can be found at this site

https://www.advocare.com/140748679

If you are looking for something to boost you at the beginning of the workout, and help your muscle recovery and endurance then check this out:

"O2 gold", which can be found at the same link above...I personally havent tried this supplemnt, but do plan on it. I have a buddy who manages a crossfit gym in my town, he told me about it a few days ago when I was buying some supplements for myself. He said he could definatley tell the difference, and his endurance truely increased. Everyones different and it may not have the same affect on you or I but he seems to love the stuff..