I suggested the walk because fresh air and exercise are very necessary both for the digestion and for other things. I think for instance it might help to get rid of the insomnia. I gather that you have stopped walking on the terrace because of M? But we leave this walk to your choice, for if you feel uncomfortable about it or find it a strain, it will not help. Sleep is the main thing, sufficient food and at any rate take some fresh air in one way or other.