Originally Posted by Mythica

The law states -

6.—(1) During the emergency period, no person may leave the place where they are living without reasonable excuse.

6. - (2) gives a list that includes why you can be out including exercise. The list is non-exhaustive. It comes down to interpretation of what is reasonable or not. If the officer believes it is not reasonable that you have got in your car and travelled a distance to go and exercise when you could walk out your door and exercise, then the officer can use 6. - (1) and you would have to fight it in court.