What should I do my anatomy and physiology current event presentation about?

:O: What should I do my anatomy and physiology current event presentation about?
It can be about anything related to anatomy and physiology. Something easy and INTERESTING. not boring. Kay thanks guys.

Answers and Views:

Answer by glowing_star
What about physiological changes due to exercise.

Cardiovascular
Hypertrophy of Heart
Increase in Heart Mass, Dimensions, Ventricular Wall Thickness
Increased Stroke Volume
Decreased Beats/Min (bradycardia)
Arteries become more elastic
Decrease in LDL
Decrease in Blood Pressure
Increased Number of RBC
Increase in Ventricular Volume
Increased number of Capillaries in Myocardium
Vasodilation and Vasoconstriction More Efficient
Increase in Blood Volume

Respiratory
Increased VO2 max
Decreased Breathing Rate

Misc
Increase in Lean Muscle Mass
Hypertrophy of Fast Twitch Fibres
Increase in Anaerobic Enzymes (make more ATP)
Increase in Vascularization (more O2 to muscles)
Increase in Anaerobic Stores (glycogen, creatine)
Increase in the number of Mitochondria in Slow Twitch Fibres