By: STUDENT ATHLETE INCOMING Day 1 Dear Diary, I’ve always wanted to try a sport where I could get over my fear of heights and gain some core strength. Skydiving was on my list, but I’m not sure it counts as a sport . . . because it’s not at the Olympics, and it’s usually advertised on tourist brochures at the airport as a sightseeing situation.  Day 2 Dear Diary, I signed up for springboard diving lessons. So far so good . . . but I tried getting too fancy during the free jump at the end. Everybody else in my group just practiced “jumping like a pencil.” Not me — I’m afraid of pencils and scantrons after taking two summer semesters in a row.  Day 3 Dear Diary, The dive tank looks...