Derrick Henry switched from the Titans to the Ravens this off season, going from a mediocre team to one of the top ones in the league. And he’s also a running back trying to out sprint ahead of aging. After all, he’ll be 31 in January. But the running back, the former Alabama star known to most as “King Henry,” has a plan for staying dominant for many more years. The newest Ravens running back works out every day and uses unique and pricy training methods. He follows the methods religiously. The Athletic, in a story posted this week, said Henry spends an extra $240,000 a year on what it descri…