Not sure about that.
Heavier set players are never up and down the line types for long, look how Walker (the most athletically gifted of his generation by a mile) and how he’s had to adapt. TanGanga had a few games where he showed excellent potential as a running full back, but think that may have led him to a development path that leads to the susceptibility for the injuries he has.
If heavier, by proxy, when you run or take on any athletic endeavour, you create more metabolic churn, he does not appear to have the recovery potential to flourish at Spurs playing the way we/he wants IMO. Hopefully this new DOF will employ a couple of world class sports science researchers, then maybe they can get him a plan that works, change of diet/supps, because anybody with eyes for it can see Spurs players have been collectively exhausted for 3years now, creating successive inverted gestalt performances.
Interesting theories, but when we can point to specific impacts/tackles/fouls causing the injuries then these theories remain mere rhetoric.