X5 LADY - engineered with less resistance for female fitness. Bullworker is the original home fitness aid, the proven alternative to expensive, time consuming visits to the Gym. Bullworker has sold in excess of 20 million products in a 40 year trading history and is the world’s number 1 personal exerciser, it has been IOC approved as personal fitness equipment since the 1960’s and has been endorsed by a number of world-class athletes including Muhammad Ali, Arnold Schwarzenegger and Dave Prowse.