As for
chakras, the lotus position is designed specifically to open the
chakras, or at least cross-legged if you can't get in the lotus. Now, this is all spiritual theory, so again, make up your own practice -- whatever works. The rosary is a Catholic meditation, and that's usually done standing. There are walking meditations. Sufis meditate by twirling. Orthodox Jews meditate by what's called dovining, or bending over repeatedly in prayer. Whatever works.