The question: My office has a gym. I want to do weights and cardio on my lunch hour, but I only have an hour to work out, change and eat. So, I have about a 35-minute window for the actual workout. Any ideas of what I can do to maximize my time?

The answer: Absolutely! I often work out when clients cancel, so I totally understand the challenge of fitting exercise, a shower and food into an hour. Trust me, it can be done!

One of my favourite quick workouts is a combination of cardio intervals and what I call "minutes." The basic concept of minutes is to do as many reps as you can of any exercise (with good form) for a minute. Then, without resting, move to the next exercise. They can be done using any exercise, but multijoint exercises like squats, squat curls, lunges, dead lifts, push-ups and pull-ups work best.

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If you exercise every weekday, try following this routine: On Monday, Wednesday and Friday do 10 minutes of intervals, plus two sets of 10-minute minutes workouts. On Tuesday and Thursday, do intervals for 25 minutes, plus 10 minutes of stretching and core work (planks, side planks, etc.).

If working out five days a week is not realistic, try this: On non-consecutive days, alternative five minutes of intervals with five minutes of minutes, repeat three times. Finish with a stretch.

Here are some sample interval workouts (you can use any cardio machine):

Here are some sample minutes workouts:

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Trainer's tip: If you have time (especially if your goal is to improve your fitness), do a longer strength workout. And in addition to the above workouts, try to accumulate 10,000 steps a day by doing things like taking the stairs and parking your car a few blocks from your destination.

Kathleen Trotter has been a personal trainer and Pilates equipment specialist for 10 years. Her website is www.kathleentrotter.com.