The F1 summer break is supposed to be when all of the drivers and staff members completely shut down and relax before the intense end of the year.
But those in F1 are usually adrenaline-seeking individuals and that can certainly be attributed to Wolff.
Why he chose to go downhill mountain biking rather than simply sunbathing in the heat of Europe is something only he knows.
Thankfully for Mercedes, he doesn't need two working arms to do his job, unlike Lewis Hamilton and George Russell who would probably get a dressing down from Wolff if they did the same.