NEW WINDSOR – Jump in the pool. Or kick back with a boot camp. Or savor a salt cave session to spice things up.You’ll thank yourself you did – or will.“I couldn’t get out of bed if I didn’t do this,” Nitza Santiago of Washingtonville said, leaning half out of the cozy waters of the pool at the Union Avenue Community Fitness Center in New Windsor.Mornings three days a week will usually find her suited up in the shallow end [...]