Out of shape

Pro Tip 1/3

Physical Fitness

Used specifically to discuss someone's fitness level in regard to their physical health.

He's panting after climbing the stairs; he's really out of shape.

Pro Tip 2/3

Exercise Importance

Highlights the effect of inactivity or absence of exercise on a person's physical condition.

Ever since I stopped cycling, I feel out of shape.

Pro Tip 3/3

Not Instant

Expresses a state that occurs over a period of no exercise or activity, not immediately.

I used to be an athlete, but after years of no training, I'm out of shape.