Why are there still so many people overweight despite the current fitness craze ?   Well , there are certain factors that effect people's size and weight .   What are they ?   One study said that low-income groups have a higher percentage of over-weight people than higher income families .   Why ?   The survey said that the low , income groups eat more junk food on a daily basis .   That makes sense . Probably less time to make dinner and the junk food is cheaper .   And junk food contains lots of fat and oil . There is one final reason why so many people are fat .   What's that ?   Nobody exercises any more-not even kids ! The average American home has the TV on for 6 hours a day !   Wow ! No wonder people are so fat . Say , Carl , looks like you could be doing a bit more exercising .   Yeah , I guess so .   You should consider eating healthier food and getting some more exercise .   Hey , I started a diet and lost 10 pounds .   So what happened ?   Well , I quit and gained it back plus 5 pounds . 