#4 You only do cardio work

Only doing cardio is not such a bad idea. The problem however is that most people don’t do enough cardio to make it stand for anything. People have a tendency to just go until it feels a little uncomfortable then they quit, when in essence the workout really doesn’t start until you reach that point of exhaustion.
At first when you are trying to lose weight, cardio is your best friend but what happens after a short while is that your body gets accustomed to the amount of cardio you are doing and the results you were once getting you are no longer able to achieve. Why is that?
Once you start a workout program, especially when you haven’t done one in a long time, your body goes into panic mode and puts every bit of resources it has to fend against the loss of energy it was experiencing. This excitement causes your body to us its reserves to “just stay alive”, when in essence your body isn’t dying but it is becoming more efficient at metabolizing the fuel that it has stored. As an example, take the person who is really over weight and they start just walking daily. For that first week the probability of them losing a lot of weight is great. Why was that? Because their body thought that it needed to throw that extra fuel into the mix to keep going. Now, if that person, in their second week, kept everything the same (activity and diet), they would still notice a weight loss but that weight loss would be much smaller than the week prior. Why? Because their body is beginning to learn the routine and beginning to understand that the extra fuel that it felt was necessary to stay live was now not as necessary as it thought it was. After a few weeks there may be no weight loss at all. Why? The body now understands your new routine and understands that it doesn’t need to release any extra fuel for you to complete your latest activity.
There needs to be a mixture of weight training (anaerobic) as well as cardio (aerobic) training to get the results that one may be looking for. This will strengthen your muscular and cardiovascular systems and cause the body to utilize more fuel than if you just did cardio.