Ski sits work your Quadriceps, Hamstrings, Gluteals and Gastrocnemius(calf).
Ski Jump = Calves, Quadriceps
There are a number of Ski resorts/Towns that lie in the Kosciuszko area. Jindabyne (sits at the base of the Mountains) Thredbo (a large Ski Resort that sits 30 mins away from Jindabyne) Smiggin Holes (a small ski area that makes up part of the Perisher Ski Resort) Perisher (the main town that makes up the very large ski resort "Perisher") Charlotts Pass (a small ski resort that sits about 30 mins from Perisher) Guthega (a small ski area that makes up part of the Perisher ski resort) Sewlyn Snow Feilds (a small ski resort in the north western part of the Kosciuszo NP)
I think it's your quadraceps
It's probably referring to muscles. Muscles do work when they get shorter. Muscles can't "get longer"; instead what happens is that another muscle pulls in the opposite direction and the first just sits there and gets stretched.
Biceps femoris and abs
With exercise bands, you can work out tons of muscles. Muscles that you can work out are arm muscles, leg muscles and back muscles. With leg muscles, you can work out the thighs, and calves muscles.
muscles work my legs
muscles are at work All the time>
The rotator cuff muscles: Supraspinatus Infraspinatus Teres Minor Supscapularis Easily remembered as SITS.