So I've been taking a gram of Vit C before and a gram after weight training as per the advice of Mr. Thibaudeau but I'm starting to add in some cardio(30-40 mins moderate) and was wondering to people use Vit C for cardio or is it a waste of time
i don't know if this helps, but i take a gram every day PWO (or just w/ lunch on off days). the vit c won't hurt anything after your cardio, and it's cheap enough that it's worth taking even if just for the assurance.
I've never heard of such a thing as too much vitamin C. Seeing as its water soluble, its impossible to overdose on, however I know there's a huge difference between "ideal" and "overdose."
That said, the effects of 1 gm of any oxidant or antioxidant on health in the long run, even if taken daily aren't going to be THAT pronounced. 1g post workout might help to reduce cortisol a bit, but honestly it sounds like the same sort of effect you get for GH and test by manipulating rest time between sets. Sure, maybe there's a slight difference, but its foolish to think these things will make or break your physique.
Vitamin C is vitamin C. I highly doubt it's going to have any significant affect on your cortisol. The only research I've seen is that individuals who are overstressed are usually low on vitamin c. Don't quote me, but if I remember correctly, a large quantity of vitamin C is stored in your adrenal glands. It's healthy, and let's keep it at that.
Rhodiola Rosea or PS is a much better option if you're worried about cortisol. There's been several RCT's that have shown statistical significance with respect to Rhodiola and stress.
Actually, I was wrong. The exact statement was that the adrenal gland has a higher vitamin C content than any other organ in the body. Supposedly, before they used blood tests to measure the stress hormones, they looked at your vitamin c levels because of the high correlation between vitamin c levels and stress.
Anyways, because you're further stressing your body with the additional cardio, one could actually argue that it becomes even more important to take vitamin c.