I'm trying to get my splits; I'm well on my way, but I still have a long way to go. How often should I stretch to improve my flexibility at an optimal pace (and not injure myself)? Is flexibility like strength, in that I need rest days for my body to recover?
My source for flexibility is Stretching Scientifically, by Thomas Kurz:
Kurz has this to say:
Kurz does not talk about the maximum number of times one can do relaxed stretching, but I imagine that it could be more frequent, though his warning about soreness would probably still apply.
Physiologically speaking, as I understand it, one can think of flexibility similarly to strength: the muscle needs to grow, and to grow it needs stimulus, fuel and rest.