In addition to cardio-respiratory endurance a0 endurance can be built up by participating in aerobic exercise.
Cellular respiration in complex organs is the Krebs cycle
Confide yourself once you find who you are and what you represent in life people will notice you are making big changes and you have power!
Well you dont have any following statements for me to answer, i can say one thing, weight and energy are the same because depending on if you are going to gain or lose weight, loseing weight causes more energy usage out of you and if you are gonna lay off and gain weight, it causes less energy being used out of you, energy depends on the weight
