Bear Grylls presents Week 4 of his 40-day military fitness challenge to help the British get in shape.

The sun is shining and the Bear Grylls are urging you to go out and practice.

His Be Military Fit course is all about challenging yourself in fresh air.

Over the past few weeks, he has share a bunch of exclusive videos for Sun readers – and here he revealed a fourth, as part of the 40-day challenge.

He said: “It’s accessible and achievable – let’s do this!”

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CANCER CARE

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