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.
Other than that, do it the way you want.  Hope this helps     According to the 6th Edition of the Publication Manual of the APA, space twice after punctuation marks at the end of a sentence. Section 4.01 - last sentence.