Seriously what the effin hell is wrong with Klopp!? We have a good thing going and he's packing it in like a twat. Actually annoyed at him for the first time.
Take some anti-aging supplements or something. Top up on B12 for energy. Apparently it's good for an energy boost.
Ginseng, Zinc, Ashwaganda, L-Citrulline, Beetroot powder, L-Tyrosine, Maca powder, CoQ10. I mean this is just a lazy google search, but i'm sure there must be something out there.
Fucks sake.