Speed form
warm up: 1.3km - 00:10:31
speed: 1.2km - 00:04:29 (03:45/km)
slow jog: 0.4km - 00:03:27
speed: 0.4km - 00:01:30 (03:45/km)
cool down: 0.7km - 00:05:45

到底讀中學關時點解可以一圈松山做到6分10秒的，好想再一試