Must-have fitness tools

Sneakers that are appropriate for your choice of activity, fit correctly and give good support are the best investment you can make when it comes to exercising. Proper sneakers help you to avoid injuries and they can increase your performance, said Jari Love, a certified personal trainer in Calgary, Alberta in Canada, whose workout program is called "Get Fit."

Some treadmills have a heart rate monitor built in, but if yours doesn't, you may want to purchase one. A portable model can help you keep tabs on your intensity level.  (iStock)

Everyone should have some sort of strength training in their exercise routine. The kinds of weights you buy all depend on personal preference.  John P. McCarthy, associate professor in the department of physical therapy at the University of Alabama, said it's a good idea to buy a weight machine, if you have the space and money. If not, adjustable dumbbells are more economical than buying individual dumbbells. With adjustable weights, you can switch out the strength easily, instead of buying a whole set.

You'll need an iPod, MP3 player or even a plain, old radio: Research shows listening to high-intensity music can increase your workout time by 30 percent. It can also serve as an incentive to push harder, and make the workout more enjoyable. 

Treadmills allow you to run, jog, walk or climb hills - all in the comfort of your own home. No excuses that it's too hot, too cold or too rainy! Treadmills can be pricey - ranging between $700 and $1,000. It's also one of the most popular piece of equipment used for aerobic activity.  Make sure your treadmill has safety features, like arm grips or an emergency shut-off clip. Try out different versions before you make the purchase.  (iStock)

Stability balls are cheap, and you can use them for a variety of exercises that target the arms, stomach and even for yoga.