Another gym phenomenon that everyone at least witnesses once is some member, often being assisted by a trainer, is performing a bizarre and often dangerous looking exercise. Most likely, that poor creature is being misled in his or her belief that new is always better and this particular form of movement is a breakthrough. Well, not quite so. Bodybuilding hasn't really changed since 1950 , the basics still work . However, in our fast-paced world, new sales gimmicks need to be invented every month to fill magazines , websites etc. Don't get fooled by the hype, as Arnold Schwarzenegger said:" Consistency, not novelty is the key to success".
Stick to squats,they worked well for my legs.