My gym has one of these

My gym has one of these

How do I use it without looking like a colossal faggot?

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use your fists and move them speedily towards the sack

Start with a smaller object and use lots of lube

Practice your headbutt

Find the hole and stick your dick in it.

Gently caress

Kek

what purpose does it have?

Can I be able to defend myself by practising on it? What muscles does it help with?

>bbc.co.uk/news/technology-37373244

You're going to want to start by shadowboxing in the mirror of the free weight section for at least 15 minutes to make sure you've got the form down. After that go over there and show everyone what you can do