I have no energy at the gym anymore- why?

A few thoughts -

1) Are you eating enough calories? If your deficit has been too low for awhile, that can really affect your energy levels.
2) are you getting enough carbs? I know some people say they feel fine doing the low-carb thing, but many people find it can drain their energy.
3) You might try changing it up and doing something different - try a new routine, new exercises, new machine, etc. It could me mental fatigue from doing the same thing for too long.
4) Do you drink enough water? low-grade dehydration can affect energy levels.

(Or any combination of the above...)

Maybe you're body is bored with the workout. Try something new.

Are you training to much or to hard, not giving your muscle's enuff rest ? For most you need about 48 hours of rest if your doing weight exercise's.

Are you also following a diet ?
If so are you cutting a lot of calories ?
Are you getting you vitamins and other stuff aswell ?

Stress or a hard/long day at work can also add to your tired feeling.

A few thoughts -

1) Are you eating enough calories? If your deficit has been too low for awhile, that can really affect your energy levels.
2) are you getting enough carbs? I know some people say they feel fine doing the low-carb thing, but many people find it can drain their energy.
3) You might try changing it up and doing something different - try a new routine, new exercises, new machine, etc. It could me mental fatigue from doing the same thing for too long.
4) Do you drink enough water? low-grade dehydration can affect energy levels.

(Or any combination of the above...)

Totally agree with this statement!!!

Even though you may be getting enough sleep and eating right, your body may still need to rest from working out. Your body builds strength as you rest and it has a chance to repair itself. it may be asking for that kind of time. I work out pretty regularly but also include rest periods every 4-6 weeks as I work out. I also use that time to change my workout as well. IMHO. Take care.

Don't beat yourself up over it, that will just make it even harder to go in!

Even if you're getting enough sleep every night, your body still might want more rest than that. When athletes train for races, there is a mandatory tapering period that happens every few weeks. During that week, training time is usually cut in half from the week before. Your body may just want to relax a bit.

Sometimes I lose motivation and I have to find a new exercise that gets me excited about the gym again. I loved running, then I lost motivation for it, so I took up kickboxing and now I can't wait until my next class! Maybe try mixing up the routine.

Finally, maybe a goal would help (outside of a weight loss goal which I would assume you already have). Maybe a 5k, triathlon, or something? When I don't want to go to the gym, it always helps me to think, "I could skip today... but I'll regret it on race day."

Hope that helps! Good luck!

Thanks for the replies everyone- no, I don't eat many carbs - I'm also not a big water drinker, but In beginning to see how important water is. and i take my multivitamins at night, should I take them w my breakfast? I'm new to this whole healthy diet thing and working out. It's been about a month I've been doing it- and got the exercises down and I enjoy doing them, DEFINITLY not bored. And sometimes I feel I don't push myself enough because recently my body hasn't hurt after my workouts. - But what are some lowfat foods w carbs?

Healthy carbs would include (but not limited to) fruits and veggies, quinoa, oats, barley, sweet potatoes/yams, beans/legumes, and whole-grain breads/wraps and pastas. I noticed you mentioned low fat - make sure you're getting enough healthy fat! Fat is important for our health, and you should be getting 15-30% of your calories from fat. Think nuts, avocados, olive oil, fish, etc.