Smoking marijuana & working out:
1) Smoke in car on the way to the gym.
This way, you don't have to worry about not getting there.
Also, if you don't have a car, you should save that joint for post workout.
2) Smoke only for small muscles groups on high volume training days.
Triceps, biceps & shoulders
High volume sets allows for stricter technique when lifting and better contractions of muscles.
Heavy low volume sets makes strict range of motion more difficult, thus more swinging and use of other body parts for compensation.
Most exercises that strain the core, dilutes the high, therefore does not allow you to maintain the ideal "zone" for workout
(Also, weed makes boring repetitive motions more tolerable)
3) Weed is a natural pain killer
It is prescribed to people with chronic pain; it allows for a higher tolerance of discomfort.
This is why the high volume sets are ideal
4) Smoke post workout to promote appetite
Weed makes people hungry (duh)
Also, relaxing and pain killing properties of MJ allows for better and quicker recovery.
These are my principles due to experience.
I acknowledge that not all people are react to MJ the same way, so results may vary
MJ amplifies what is already there; lazy people will still be lazy.
Thank you for reading.