hihi...
On the official French site, he recommends 30 mins per day in Cruise... gradually building up to almost an hour by Conso. By doing this, even walking gradually faster and faster, it becomes such a way of life that it's going to part of our "new lives" when we get to the other end of the tunnel... (this I do "know", as opposed to just spouting the theory of all the foodstuffs, cos the foodstuff theory hasn't yet worked for me, but the exercise stuff has!!)...
My alter ego on the French sites regularly says to people in Conso - "marcher plus pour manger plus" (that's for Jet... she likes it when I murmur in French to her!!)
"Walk more to eat more..."
Surely THAT will convince us all?