BLOX
BLOX › Exercises › Strength

Open book – how to do it right

Lie on your side, knees bent, open your top arm back like a book page.

This is how Stickfreed, our glowing stick figure, shows you the exercise on your TV – here the start, middle and end position. In the app he turns slowly so you can see everything.

How to do it

  1. Lie on your side, hips and knees at 90°, knees stacked.
  2. Arms together in front, top arm long.
  3. Open your top arm back in a wide arc, head follows.
  4. Knees stay together – breathe out and let go.

How long?

40–45 seconds at a steady pace: slow on the way down, strong on the way up. 2–4 rounds. Then switch sides – BLOX tells you when.

If something niggles

Don’t fancy the floor? Then do Lying twist instead – BLOX swaps it automatically if you mention it at the start. Stop if it hurts; if you have complaints or pre-existing conditions, check with a doctor or physio first.

Similar exercises

Try it free now

BLOX is in beta and free until 31 January 2027. Pick your phone:

Android:

  1. Join the Google group (needed for the test)
  2. Open the test link
  3. Get BLOX from Google Play

iPhone: TestFlight installs first, then BLOX.

Join the waitlist

Not ready yet? Sign up and we’ll let you know when BLOX is in the stores. No newsletter, no spam.