Discussion: How much practice is too much?

What is a healthy amount of practice, to learn, to develop, but not to injure?  Many musicians from all walks suffer from all kinds of injuries from blisters to repetitive strain injury.

How much weekly practice would you recommend to others to maintain a healthy balance?  Do you have any exercises you could share with other musicians, students and tutors?

Please comment below, we’d love to hear from you!