First 10k run. In july 2014 I started exercising being over 100kg overweighted man. At this run I was probbably below 90kg, but it was still very hard to run. I partially have to walk. But anyway I managed to cross the finish line below 1h.

Result: 00:59:11

Me (<75kg) in 2016 running for 40 minutes result:

Anything is possible