It's strange alright, players like Lallana putting on a stone of muscle yet being faster and fitter too, any saints fan would tell you they used to have to take him off at 70 minutes as he didn't have good stamina.
Funny too that Sakho was instantly hidden away after getting caught for performance enhancing drugs. The more suspicious of us might even suggest he's being punished for forgetting to take the masking agent used to conceal certain "supplements" Klopp has them taking.
Were players at Dortmund taking the same supplements, too?
We could accept that Klopp is a good manager, you know.