Viral infection and physical work to not go togeth

Despite the world wide IT meltdown on Friday I managed to see a GP, who has given me some serious antibiotics.
He thinks I've a viral infection and I'm hoping why that is explaining the complete lack of energy.
Unfortunately this decking needs to get fixed.
Have added a substantial amount of new joists, and ( hopefully) removed all the dead top decks.
Now to add lashing of wood preserver to the underneath and let it dry. Please don't rain too much later.