For me, I have not had ‘massive muscle gains’ without working out. But I did notice a pumped and fuller sensation around my chest and upper arms.
My idle theories were that 1) the improved sleep may have promoted growth (HGH and such are released when we have deep, high-quality restorative sleep); also 2) I think that my body has muscle memory from all of the workouts that I did in the past.
Those were my pet theories. Don’t much care really. I like going to the gym and I’ll be back in there soon. It was interesting though. Definitely supports the idea that the subliminals are able to enhance results in the gym.
As far as the general idea of muscle growth without gym, well, muscles are made from protein mainly, and the body constantly synthesizes protein. Every growing baby and child is definitely building muscle without going to the gym. So it’s not a completely crazy notion. Anyway, doesn’t seem to matter that much.