Less Energy & Grumpy Since Working Out?????

If you're eating as much as you should be (150 calories off isn't that bad), I would certainly get checked for your iron levels (and other vitamin deficiencies). I was feeling low energy, my hair started falling out, and all sorts of other smaller issues. Turns out I was borderline anemic, I've been taking iron supplements for 2-3 years now (under doctor orders, don't just go out and do this because iron can be harsh on your body) and I've not had an issue since. If your body isn't getting enough of something it will definitely let you know.

Ugh, I'm sorry you're feeling that way!! Ditto to everything here! Are you drinking enough H2O to compensate for what you lose exercising? That always makes me feel lethargic and grumpy, as I start to get dehydrated.

Also, are you over-exercising? Like, are you pounding through the cardio every day, but not giving your body days to recover? Are you alternating days with weights, instead of focusing only on cardio? Sometimes, working out every day can have this impact too.

Good luck. And congrats on almost being at your goal!

Try eating your meals at the same time every day, so your body doesn't crave energy, its getting it in consistency from eating.
If you feel that grumble in your tummy it means you have waited too long to eat.
There is a such thing as "Over Training Syndrome"
~the overtraining syndrome is a neuro-endocrine disorder where the normal fine balance in the interaction between nervous and hormonal systems is disturbed and the body is so tired that it now has a decreased ability to repair itself during rest.
~if you constantly push your limits without giving your body a chance to recover, your entire engine may just break down

Stop exercising for a week and reduce your training afterwards. The week of recovery will give your body a wonderful chance to recover and recuperate after a long period of overexertion. Your muscles will have an opportunity to rebuild themselves during this essential time of relaxation.

Shape Fit.Com article Over Training and Exercise

To help with your sleep you may want to try exercising at other times of the day. I was working out in the evening and it kept me from getting to bed til late because I was still revved up. Now I workout in the morning or at lunch and by the time 9 p.m. hits, I'm exhausted. I used to have bad insomnia and working out in the AM has helped drastically.

I seem to have more energy and happier when I work out.