Many people are under the misconception that if they are thin they are fit. There are many thin people who have high cholesterol, high blood pressure and are really, not as fit as they think they are. There are some things that you should consider if you want to know just how fit you really are.
Don't be afraid to ask for help at the gym. If you don't know how to use a machine, go ahead and ask. Understanding how to utilize both the aerobic and strength building machines will give you the confidence to actually use them. The more comfortable you are, the more likely you are to keep up your workouts.
When strength training, the rest you take between sets, will determine how your muscles will develop. If you are looking to build muscles and get bulky, your rest time between sets should be longer. If you are looking to build endurance and get leaner, more sculpted muscles, then your rest time should be shorter.
A great way to help you get fit is to start incorporating intervals into your cardio. Going all out for thirty seconds and then resting for thirty seconds, is much more effective than if you were to just perform at a steady rate. Cardio with intervals also requires less time.
Treadmills, whether at home or in the gym, are convenient, but a run outside is a better exercise. A great run through a city park or down a country road is both scenic and exhilarating so save the treadmill for inclement weather when getting out is impossible.
The information that has been provided above should have given you an idea for just how fit you really are. If you are not as fit as you would like to be, it is important for you to start making changes now while you can still fix your overall fitness.