rosenberger_m saiddoes anyone out there go to the gym first thing in the morning in a fasted state?
It looks like you have a few times. At 5'8" and 145#, the last thing you need to be thinking about is fasting. I weighed 155# at 15 with 12% fat. You need to EAT Little Buddy.
WIth regard to training while hypoglycemic, it's just a pretty dumb idea. You can study up on ketosis.
In general you don't have the energy to train just through fat and protein conversion alone, with regard to aerobic activity.
By limiting your calories you do EXACTLY WHAT YOU DON'T WANT. You train your body to become a fat-storing machine (which is idiotic at least, and dangerous at worst). Your body PREFERS carbohydrate for energy. When it's not there, it's starts storing fat, lowers your metabolism, and burns muscle mass to provide glucose. It's called the feast / famine response and is residual from the cave man days of intermittent food.
In order to gain muscle, increase your metabolic rate, and get leaner, you need to UP your calories, increase your activity level through HIIT, and do resistance training.
Many fat asses fail in diet because they invoke the feast / famine response repeatedly, and have their metabolism so fucked up and their body trained to store fat that they say they have bad genetics, and get back on the couch.
Eat. Train harder. You'll get big, and lean.
When I train for a contest, I'll often bring my calories up to as much as 4800 to support my activity, all while getting down to about 4% and 5'5" at 190#.
Not eating is one of the single most stupid things you can do to sabotage your progess.