So, a resting pulse rate for 79 is perfectly normal. Conditioned athletes might have a much lower resting pulse rate. 100bmp and higher is considered tachycardia, although for some people, this could just be normal.
A. One space after a colon. There is a traditional American typing practice, favored by some, of leaving two spaces after colons and periods. This practice is discouraged by the University of Chicago Press, especially for formally published works and the manuscripts from which they are published.
A. Published work these days rarely features two spaces after a period. In the era when type was set by hand, it was common to use extra space (sometimes quite a bit of it) after periods, a practice that continued into the first half of the twentieth century.