I currently train 6 days a week with the exception of Sunday, as I like to rest and recover and mainly just stretch on this day.
I do pretty intense workouts for my sport and am constantly pushing my body to the limits on every day of the week. While on Test E (500mg/week) Would my workouts be able to be prolonged and even more frequent? I've had a few friends who do twice a day lifting, and hit different body parts since the recovery seems to be so fast. I wouldn't want to do anything to destroy my body but hard work and results is never something I've been afraid of. Is there a limit to where it becomes unsafe? Or can I train my heart out as long as I feel up to the task?
Also as long as you continue to stretch everyday will you really lose that much flexibility? Just curious.

Thank you for any advice!