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.
I believe that you use two spaces after each when typing. I only use one space after colon and semi-colon. They are intermediate place punctuation, unlike full stop, exclamation and query which are terminators. One space either side of a dash - but none when the - is a hyphen. When I was working on Apple Macs, I used a long dash for dash and a short dash for hyphen.