Whether you're enjoying a session in the home gym, local park or somewhere a little more commercial; make sure you're wearing one of these.
Fight Geek points to a good tutorial on use of the Double-End Bag (aka Floor-to-ceiling ball). Nice one.

"Sonnon is without doubt one of the top conditioning coaches in the US, the thinking man's coach. He is the hologram man. Try and hit him and he disappears."
- Pavel Tsatsouline
Are you ready for Tacfit?
A few others you might like :
Leave a comment below, or discuss it in detail in the SttB Facebook Group.