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.
Bench press is a form of a compound exercise that targets the upper body. While the bench press mainly targets your pectorals, when you are lowering and raising the bar, your arm and shoulder muscles are also activated. Even the core muscles are a bit triggered to balance the weight. That's why it's usually advised that you do compound exercises before isolating any muscle group.