No one said hitting the gym regularly was easy, but 73-year-old Kitty Lipin sure knows how to keep things going. Tuesday she tried lifting weights for machines for the first time at the YMCA. Think she's tired?

"Oh it's great, are you kidding?," she said enthusiastically. If fatigue is keeping you from working out, she has an explanation. "That's why people are tired," she said. "They can't get going and they don't feel good. But even if you're tired, go to the gym, it'll wake you up."

When Kitty started getting bored with her old gym last year, she joined a new one where she can talk to more people and meet more friends. At the Shineberg YMCA, she's tried spinning, and now circuit training.

"I'm game for anything, "she said.

She gave up spinning because the music was too loud. But other ventures, like the Silver Sneakers class, she sticks wtih. It's harder than you think, she said.

Maintaining your workout is all about changing it up, according to wellness specialist Jeannie Ulrich.

"I talk to people on the treadmill, why don't you try another piece of equipment? Why don't you get on the elliptical? Why don't you get on the stair climber?" she said. "When you get bored, it's gonna be very hard for you to come back."

You can also change up your workouts at home.

"If you're at home at night, and you're kind of bored, go out and walk your dog for a little while."

Better yet, choose a buddy, suggested YMCA fitness director Ryan Smiley.

"It's too easy to hit that snooze button if no one is accountable to you." Smiley also recommends incentives and monitoring. That's what he does in his Jump Start Your Heart program at the Y.

Participants can track their progress and get help trying new workouts. That's what Kitty's doing.

She knows, you're likely to give up an exercise you can't stand.

"You have to like what you do," said Kitty.