Venus Williams survives little known Czech Sandra ... Venus leaned to her left to hit a high backhand swing volley and strained her Psoas muscle, which caused her to scream in pain.

Maintaining a healthy lifestyle is no easy feat, but decorated tennis champion Venus Williams knows a thing ... temporarily relieve any minor aches in muscles including conditions like arthritis ...

MELBOURNE, Australia -- Venus and Serena Williams have withdrawn from the doubles competition at the Australian Open, shortly before their first-round match was scheduled to be played on Friday.