I've used NO, and still do now, and don't see it as essential, but sure as hell enjoy it.
I took an NO product before, I liked some of the effects but it only worked once and now I could care less to put the money down on un needed supps.
Improvements in quality of life and wellbeing?
Any specific examples? Needs to be a little less inclusive. I know that after I take a piss I feel an immediate improvement in well being same happens after I burp.
and is stated as usually deficient in active individuals.
I know excercise kills zinc levels just eat some meat and be done with it. If you arn't feeling effects of zinc deficiencies then don't worry about it. I know when I took zinc previously it made me sick to my head. On a side note I have heard it does help with sleep.
I don't always get enough Zinc in my diet, or magnesium. ZMA tabs have turned out to be the cheapest way to ensure I do, cheaper than zinc tabs alone, nevermind zinc and megnesium tabs.
What gave you that idea?
L-Glutamine has saved my immune system. I used to get sick all the time here in Japan. I'd be doing MMA hard, lifting heavy, and working in a school. So I'd get sick a lot (1-2 colds per month). A friend suggested I take Glutamine after I worked out, and I did. Stopped getting sick as often. I ran out of glutamine a while back and so did the store I'd get it from...and I started getting sick again. So I added the glutamine back in and bam, back to very few colds.
I've heard it doesn't give you any advantages for exercise, but it's sure helped me avoid colds...and that has helped me train more. And be less miserable from constant colds.
Interesting reason, I figure your high protein diet would cover that, but at the same time not all of it gets absorbed due to competion for absorption. But since it obviously works for you, you might as well keep taking it.