I always work out by myself at the same time at the gym and a group of guys always meet up to work out together. I would say I look small but i have really good strength and always lift heavy. Recently this group of guys have started fucking around my vecinity while im trying to focus on my lifts and it throws my off guard. I always go at an odd hour (past midnight) and so do they so its pretty much just me and them. The last time they started to imitate my lifts but instead of lifting weights they lifted the bench. I always have headphones on so it doesn't annoy me as much but recently it feels as if they are encroaching my space. Do i confront them or just continue to ignore?