Now that Lori Loughlin is back on the market, she’s putting herself first. “Lori is really into health and wellness these days,” a source exclusively tells Us Weekly. “She works out almost every day and takes it pretty seriously.” So seriously, in fact, that the Full House alum, 61, dabbles in everything from yoga and strength training to sculpt and dance workouts. “Fitness has helped her a lot mentally too, not just physically,” the insider say…