Does skipping at home in winter count as exercise?

This is exercise.

Jumping in place belongs to aerobic exercise, which can enhance lung activity. Jumping is also a good way to keep fit. Regular jumping exercise can make the body get health care vibration massage, thus improving health, physical fitness and sports quality.

Exercise refers to a kind of physical activity aimed at strengthening physical fitness, regulating spirit and enriching cultural life through military training or sports activities.