Grenier, 38, also is a passionate filmmaker, musician and environmentalist. In 2002, he directed his first film, "Shot in the Dark." It chronicled his search for his father, a man he had not seen since he was a young boy. "I wanted to explore the necessity of a role model — a father figure," he says. "I didn't need to find him as much as I needed to reconcile what he meant in my life." Today, he considers reconnecting with his father a needed rite of passage. Grenier credits two strong women, his mother and grandmother, for picking up the slack resulting from his father's absence and instilling honesty and compassion in him.
You swam with sharks in Costa Rica. Did you swim in a cage?
No. No cage is necessary. Sharks are very peaceful around humans. If you antagonize or spook them … they will defend themselves. Otherwise, they won't come after you. … We need sharks. They are so important to the ocean's ecosystem.
When you are home, what types of exercise do you do?
I like to change it up. I try to exercise three days a week. Lately, I've been doing high-intensity interval training. I'm really getting into running and lifting weights. Now and then, I'll work with a trainer. One of the privileges of living in New York is walking. And exercise makes me feel good.
Do you use any devices to track your workouts?
I got a heart rate monitor so I can push myself and increase my limits. I also use apps so I have something to focus on and tangible goals to strive for. They keep it interesting and allow me to track my progress.
What kinds of foods do you choose? Do you cook?
I try to eat a balance of quality foods and like to explore a range of flavors. I enjoy slowly savoring the moment and every bite of food. Otherwise, it's too easy to consume empty calories without even remembering it. I love to cook. My mom's brown rice salad is one of my favorites. I add steamed or parboiled julienned vegetables and serve it cold on romaine lettuce.
What do you do to relax?
I don't formally meditate anymore. I used to, but I got too distracted. Music relaxes me. … I'm also a big proponent of napping.