LUNGE
A good exercise for building up leg strength quickly, ideal for those peoples going skiing.

There is one main rule when doing any squat style exercise, that is to avoid extending your knee past your toes.

Keeping your feet shoulder width apart, take a stride forward with one leg, bending the rear leg slightly in order to keep the back straight.

Bring the leg back again to the starting position and repeat either or the other side, or to make the exercise harder, stay with the same leg.

Variation of this exercise are using a step box or hand weights

Make sure your place your feet firmly onto the box, and check that the step box is secure.

When using weights, you can either keep them by your sides, or do an arm exercise such as a bicep curl.