This thing could kick off any time but it might be months. 2 months of heavy lifting will help moderate your aggression and make you more effective if it goes hot. .
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Edit - forgot to add, eat keto if you can. All this above will maximize your testosterone
I've been practicing a wolf-trot. Alternating 100 yards jog then 100 yards fast walk.
At first it was brutal, I could barely jog 100 yards. But I've worked up to 15 minutes of this carrying a small pack with 10 pounds of stuff and a walking stick to simulate a..... uh you know, the thing ;-) I want to work up to 30 pounds and 30 minutes. The sooner I can the better.
The rationale is -- even with a car or moto or bicycle in a SHTF situation, eventually you will end up on foot. Being able to E&E and move fast on foot is of paramount importance in my opinion.