You can convert it from a machine for doing proper leg extensions to a leg curl machine by moving a single knob. However, the adjustments don’t stop there—it has eight leg holding positions ...

One major concern is the increased stress on the ... Plus, it is not very convenient because you need a special machine.

If you buy something via one of our links, we may earn a commission. The Syedee Leg Extension and Curl Machine is just $203 right now. This Walmart bestseller is usually $1,100, but it's currently ...