Started this challenge at the beginning of this year, so this is the summary of my first week of training: Tuesday - 43 minutes at an average pace of 6.40min/km. Average HR of 83% and 6.5k done. Wednesday - 45 minutes, avegare pace of 6.23 min/km. Average HR of 83% and 7.15k done Friday - 38 minutes, 6.31 min/km, 82% av HG and 5.9k done Saturday - 51 minutes, 5.59min /km, 87% av HR and 8.7k done Sunday - 1h30 of padel with the friends. The body feels well. A bit of soreness, but perfectly manageable. This, for me, is very important. I know the first weeks are a pain. When you have your responsibilities, you cannot give yourself that killer workout that gives you that new walk for 2 or 3 days. Face the facts, you do not have strenght to endure longer runs and start enjoying, right away, but results will appear.