home workout; working out at home
Casual abbreviation of 自宅 (home) + 筋トレ (strength training), but often used broadly for any exercise done at home. Common in social media and fitness contexts.
Even without going to the gym, you can get a good workout at home.
I recently bought some equipment for home workouts.
Abbreviation of 自宅 (じたく, 'one's home') + 筋トレ (きんトレ, 'strength training'), though now used for home exercise in general.