What does 3x10 10 reps mean?

Type:	Video
Duration:	00:31

Type	Quality	Size	Download
mp3	128 kbps	495.96 KB	Download
m4a	128 kbps	495.96 KB	Download
webm	128 kbps	600.15 KB	Download
mp4	144p	156.7 KB	Download
mp4	360p	2.32 MB	Download
mp4	360p	522.04 KB	Download
mp4	720p	1.61 MB	Download
mp4	1080p	2.45 MB	Download

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