Anonymous ID: 6a9f98 Aug. 22, 2018, 11:22 a.m. No.2703416   🗄️.is 🔗kun

Shadow boxing;

Shadowboxing is an exercise used in the training for combat sports, especially, as its name implies, in boxing. It is used mainly to prepare the muscles before the person training engages in stronger physical activity. In shadowboxing, only one person is required to participate; the participant throws punches at no one in particular.