The main issue is body composition (see the body fat calculator for more). Calorie expenditure will vary depending on the ratio of body fat to muscle or lean mass. NOTE that as our bodies adapt to exercise and our body composition changes - so will the amount of Calories burned.
The definition of a throttle is a valve that controls the fluid flow. An example of a throttle is a car part that controls how fuel moves through the system. Throttle is defined as to control the speed of an engine or the flow of fuel in an engine, or to hold down or choke.
Best Answer: the throttle body (TB) controls how much air gets to the engine. It might be safe to drive it but you will probably experience a decrease in gas mileage and lowered performance. There is not fule connected right to the tb so there is no chance of it catching on fire. The fuel injectors are quite a ways from the tb.