Ashton Kutcher is getting toned and tough - so he can fend for himself and look after his family following an Armageddon-type crisis.
The movie star and producer, who is married to health nut Demi Moore, fears a major U.S. energy meltdown is nigh and he's trying to get superfit so he can deal with the chaos that will follow a blackout or worse.
Kutcher discovered combat training Krav Maga last year as he prepared to tone up for his role in Killers and now he's obsessed with running, Bikram yoga and Muay Thai fighting with the French national champion - and he insists he's committed to his extreme workouts, so he can dominate in desperate times.
The 32 year old tells Men's Fitness magazine, "It will not take much for people to hit the panic button. The amount of convenience that people rely on based on electricity alone. You start taking out electricity and satellites, and people are going to lose their noodle.
"And people are going to go, 'That land's not yours, prove that it's yours,' and the only thing you have to prove it's yours is on an electronic file... People's alarm systems at their homes will no longer work, Neither will our heating, our garbage disposals, hot-water heaters that run on gas but depend on electricity.
"What happens when all our modern conveniences fail? I'm going to be ready to take myself and my family to a safe place where they don't have to worry... All of my physical fitness regimen is completely tailored around the end... I stay fit for no other reason than to save the people I care about."
And he admits he tasted what life could be like after a major national or international calamity when he, Moore and her kids were left without power for 14 hours at their mountain cabin last Christmas.
He adds, "I got my guns out. We made a fire. We went to the grocery store... People were rolling in and out, clearing out all the shelves... It was like a preview."