Weak at the gym?

There are many things that could cause this - not eating enough good food, not getting enough quality sleep, over-training... If you train every day then yeah it's most probably down to over-training. When you train you put your body under stress, and the way your body grows stronger is by growing while you recover when you're at rest. If you're never resting, you're never recovering or growing. What does your workout routine look like?

 

What do you eat?

Also, how long have you been working out? What's your goal? There are good routines like the "5x5 stronglifts" routine or Jim Wendler's "5/3/1" routine which are popular and proven to work well, and they're usually only 3-4 days a week.

 

Guess it's a flatline symptom. I had that too. Well I didn't have shaking legs but I got mentally exhausted very easily.

It's gotten better after a long while of rebooting, but whenever I have an ogasm the low endurance comes back.

 

It sounds like you probably aren't getting enough. A lot of guys think that they're eating a lot and wonder why they don't put on weight, but really they aren't eating as much as they think they are. A lot of fitness people also tend to eat a low fat diet which is a bad idea and it isn't as healthy as you'd think it is - how many cals would you say you eat per day? And what's your bodyweight?

If you've been lifting for a year perhaps the 5/3/1 routine would be best:

https://www.t-nation.com/workouts/531-how-to-build-pure-strength

It's a little lower in volume than many routines but I had the same problem, and when I switched to that I packed on size and strength really quickly. Sometimes less is more.

 

How do you know that for sure? If you're getting head aches, training every day and your motivation is gone, those are all signs of overtraining. And if you aren't gaining weight while training either you're not adding enough weight to the bar to create progressive overload, or you're just not eating enough. Again, many guys who think they're eating loads and wonder why they don't gain weight actually aren't.

 

In the 5/3/1 routine they do a light "deload" week every 3 weeks to prevent overtraining, then increase the weights the next heavy week - even though on those light weeks I really wanted to carry on lifting heavy but that helped me a lot. If you're not gaining much weight you should really look at how much you're eating though. Weight gain does add up to the amount of muscle you build unless you're losing fat and you weren't fat to begin with.