"I won't lie, this birthday was hard. I thought 'Oh my God, I'm halfway through my life? But when I think back on my 20s and 30s, I look better now than I ever have. Yes, I'm older, but I'm also wiser, and that's a more intrinsic type of beauty." -Jillian Michaels to Shape July/August 2014.
"So when you ask me, 'What do love about the gym? What do you hate about it?' what I love is that I feel empowered. What I love is I feel comfortable in my own skin, let alone my own skinny jeans, and that's a big deal for me. Fitness is transcendent. When you feel strong physically, you feel strong in every other facet of your life." -Jillian Michaels to Women's Health January/February 2016.
"There are so many good reasons to exercise. It doesn't matter how profound or superficial your motives are, as long as it's something that matters to you." -Jillian Michaels to Shape July/August 2014.
"It's important for women to have overall strength, because when you feel physically powerful, it transcends into every facet of your life. The best thing about having strong arms is because I love to pick up my kids." -Jillian Michaels to Shape July/August 2014.
"The most important thing you can do in life is pause—and I'm not a good pauser. But it's so important to pause and then play out a situation in your head: If I do this—even though it feels really good in the moment—what's the outcome going to be?" -Jillian Michaels to Health November 2014.
"Consistency is the key to getting results. If you're pushing yourself to work beyond your comfort zone for four rounds four days a week with this routine, you'll notice that your body starts to change within the first two weeks." -Jillian Michaels to Shape July/August 2015.
"There's a confidence and sense of self that comes with age that I didn't anticipate. I don't feel the need to prove myself now, which I did for a very long time. And there is a peace that I didn't have in my 30s. I no longer feel this urgency to make impulsive decisions." –Jillian Michaels to Health November 2014.
"I don't believe in all or nothing. I think the key contents are: Don't overeat, avoid chemicals as often as possible and...that's it." -Jillian Michaels to Health October 2015.
"You can have chicken-fried steak or whatever splurge food you're craving 20 percent of the time, but the other 80, you've got to make the better choice." -Jillian Michaels to Shape July/August 2013.
MORE PHOTOS: Jillian's cutest family photos
"The key to fitness is it's got to be fun, or you won't do it. Then you need variety and intensity. Variety so you're working your muscles from as many different angles as possible. And intensity based on heart rate in relation to energy output—so if you're going for a shorter period of time, the intensity level has to come up; for a longer period, bring the intensity level down." -Jillian Michaels to Health October 2015.