You may have heard that the diet that works is the one you stick to. The same is true of exercise; it isn't going to work if you don't do it.
So when it comes to finding the best exercise for you, figure out what you enjoy, then make sure you do it often.
Walking, cycling, playing soccer, swimming and yoga are all excellent ways to get active. Many marvellously healthy people have never lifted a weight, or been to a spin class.
But for many of us, whether for reasons of convenience or a desire for thorough, controlled fitness that develops every aspect of the body, gym visits are a valuable fitness focus.
Why train at a gym?
The benefit of joining a gym is that you'll be able to train across all three fitness disciplines and have access to expert instruction.
Most gyms offer a variety of cardiovascular-based exercise machines (like treadmills and exercise bikes) and strength training equipment (such as weights), plus a choice of exercise classes to suit most age groups and fitness levels.
If you feel a little anxious about visiting a gym, you're not alone. Embarrassment is one of the major barriers to exercise. You need to figure out if the gym you're going to join is the right fit.
So look at the type of people who are already members, and see if you would be willing to puff and sweat alongside them. Also, check to see if staff are friendly and helpful.
Large gyms can be a little impersonal, and have a 'fish bowl' feel. These work for some, but many people prefer smaller centres that cater for overweight or inexperienced members. For example, some gyms are women only, or have rooms set aside just for women or personal training.
Each centre will have its own unique culture, staff profile and membership base. So don't be discouraged if the first place you visit is not what you had in mind.
Choosing classes
It's also worth having a look at the exercise classes available at the gym you're keen to join.
Gyms used to be a place where people went to simply lift weights or run on a treadmill, but the majority now offer a variety of classes in aerobics, yoga, pilates and more.
You can expect a number of names and formats for these classes, like pump, spinning and gravity. Don't be afraid to ask what the classes focus on, and how busy they usually are.
Check to see that the classes on offer appeal to you, and that they're on at a convenient time. If swimming is your exercise of choice, you'll find some gyms are equipped with an indoor pool and spa.
The gym floor
Is it neat? Is it organized? Have a look at the quality of the bars and plates. Are the benches in a decent state of repair?
If you intend to use the machines, make sure there is a wide selection and that they have easy-to-understand charts and instructions close at hand. The equipment should be clean and well maintained.
Staff should be available to handle any enquires about operating the equipment, and to advise on the correct technique during exercises.
Beware of reception
More often than not, the gym reception is a very impressive affair.
Gyms spend most of their money here, thinking it's where 'the sell' really happens. Some even sell fast food and soft drinks.
Have a look at the kinds of food they're selling and you'll quickly get an indication of the gym's attitude toward you and your objectives.
In short, get out of there and onto the gym floor as fast as you can.
Instructors and trainers
The instructors are a key part of your gym experience. What you really pay a trainer for is their knowledge, and a capable trainer understands this.
Most instructors and trainers will have a list of their credentials either on the website or displayed at the gym. Look for people who have invested time in their chosen discipline, as much as for a formal qualification.
Location and hours
The rule of location, location, location certainly applies when you are deciding which fitness centre to join. A gym needs to be accessible and convenient if you are going to get value from your membership.
Ideally, it should be within five or 10 minutes of your home or work, otherwise it's easy to find excuses not to go.
Also investigate the hours of operation, including holidays and weekends. Make sure the facility will be open at the times you intend to train.