noun
working out at home; home workout
Slang abbreviation of 家 (いえ) + トレーニング. Used in casual conversation and social media. Compare with 宅トレ (たくトレ), which is synonymous.
See also: 宅トレ
ジムに行かなくても、家トレで十分鍛えられるよ。
Even without going to the gym, you can get a good workout at home.
最近、家トレ用の器具を買った。
I recently bought some equipment for home workouts.