Childhood Obesity Causes & Consequences. On this Page. Childhood obesity is a complex health issue. It occurs when a child is well above the normal or healthy weight for his or her age and height. The causes of excess weight gain in young people are similar to those in adults, including factors such as a person's behavior and genetics.
You're right, here's a quick calculation: Say you bench press a 100kg mass and it travels 1m (apparently you have really long arms). Lifting that weight 1m expends (100kg)(1m)(~10m/sÂ²) = 1000J. Converting to calories and then kilocalories (food calories), this gives you something one the order of 1kcal. Bench pressing 100kg burns about 1kcal.
If you are fat, it does not count. If you weight 250 lbs, benching 225 lbs is not particularly impressive. However, if you are fairly lean â 5% to 15% BF a 225 lbs bench press is a great number. Out of the big three the bench press is the lift which is the most affected by your bodyweight.