Olivia should add WHY she wants a health career in a hospital. She mentions that she 'realized she wanted to specialize in health care administration during a summer internship' - but not WHAT happened to make her feel that way.
When giving an elevator pitch, it's always a good idea to add a relevant story - make them relate / care about you a bit more.
2. Because Mary is a better candidate, I am voting for her rather than him
take in calories that you will burn or just work out a lot.