Workout Wednesday: Anna Kaiser’s Top Workout Secrets for Keeping Off the Weight

— -- Trying to lose weight is often difficult, and it can be frustrating when you hit a slump.

Enter Anna Kaiser, fitness trainer to the stars, who appeared on “Good Morning America” today to share important tips for jump-starting, maintaining and accelerating weight loss.

Kaiser, whose client list includes Sofia Vergara, Kelly Ripa and Sarah Jessica Parker, answered viewers' questions and outlined the following three strategies:

Tip 1

Do more cardio using a heart rate monitor.

"Make sure you get your heart rate up, elevated and keep it elevated for an extended period of time," Kaiser said. "Thirty minutes is great, if you can do that on a daily basis. Forty-five minutes is extra work. You can add more weights to make it harder, but use a heart rate monitor that is the best way...to know how hard you're working and to make sure your heart rate is actually elevated."

Tip 2

Lift more weights.

Lifting heavier weights helps build lean muscle mass to increase your metabolism, Kaiser said. "You should life a weight that then gets your heart rate elevated," she said.

Tip 3

Do moderate, extended workouts. Kaiser also said people should take a recovery day.

"We have 168 hours every week," Kaiser said. "We're only active three of them. That leaves a lot of hours behind a desk or sleeping ... take the stairs instead of the elevators, stay active and make it efficient. If you only have 30 minutes, get your heart rate up. You can do that with cardio, with weights, with flexibility and yoga. Really try to do something every single day."

She added: "Think about what you're eating and how you're eating as well. Small meals all throughout the day. Eat healthy, live foods. Try and cut out anything processed, sugars, from a box and that will help rev up your metabolism."