Nutritional Impact on Muscle Tightness and Flexibility???

[b] Could anyone lend any info, or point me in the right direction of some, that would enlighten me on the degree of impact (if any) nutrition has on muscle tightness or flexibility. My muslces have always been quite tight, and my diet has always consisted of a lot of shit. I’m just wondering how closley the two are conected.

Thanks!![/b]