Balance board: It's useful?

[STP]

I’ve have a Slackblock and its a nice alternative to a bosu ball. 360 degree and small enough to have anywhere.

SlackBlock

Here it is in action. It looks easy but I find it super challenging. Really gives my ankles, legs and hips a workout.

Slackblock Benefits & Update: How the Slackblock has worked for me over the past few years.