Too lazy to even stand up to exercise today? No problemo, because you can complete an entire circuit of exercises without ever leaving your chair!
Take a look at this fitness video for the how-to on doing seated barbell calf raises. All it requires is that you sit on a flat, stable surface, place a set of weights on top of your quadriceps, and slowly lift your heels up and down.
"Seated barbell calf raise" is a variant of the classic "seated calf machine."