Run: 1:16 Week: 5:14 1' on, 1' off efforts of increasing grade on the treadmill. Everything was at 8.7mph, the off efforts were all at 1% with all the on efforts increasing 1% each effort. Did 13 efforts in total, meaning I maxed out at 13%. Did this same set less than a month ago and bailed after 12%. Felt really bad and tired today actually, almost pushed this back to tomorrow. Did 4 "strides" after.