workouts

is it normal to feel completely tired and exhausted post-workout? I’m currently using a pre-workout and when I take it I have a lot of energy but by the time my workout is over I’m completely exhausted so it’s causing me to crash hard any advice on if I should change what I’m taking pre-workout...

I’m looking for some advice on using sr9009. Right now I am doing 5mgs 5x per day and not seeing much results I switched to running it pre workout only 15mgs and seeing much better changes. Is anyone else on here using it this way and how has that strategy been working for you?