In the vertebral column, the largest number of vertebrae occur in the? * O Atlas
Axis
O Cervical spine
O Thoracic spine
O Lumbar spine

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

10% more body fat than is recommended i believe

Push up require upper body strength, so weight-training exercises such as shoulder press, curl ups and dead lifts would improve your ability to perform proper push ups.