Within a year, Tim Peterkin, 41, and Cathy Slack, 60, went from being complete strangers to best friends. The two co-workers now share an inextricable bond since Slack donated her kidney to Peterkin, who has kidney disease. "From the initial conversations between me and Cathy, I could almost feel her spirit. It was one of those things where you feel like someone's a good person and has a big heart. So it started to make sense to me why she would want to do this for somebody, even if she didn't really know them well. It just seemed like the type of person that she was, and still is," Peterkin told People. Tim Peterkin, 41, was in need of a new kidney – and he found one in a most unlikely place: his company’s newsletter. 💚 pic.twitter.com/RitaJqWjzU — Sharecare (@SharecareInc) November 29, 2021 Slack acknowledged that she was blessed with great health and saw it as an opportunity to help another person to experience a robust life. "I am really fortunate to be very healthy. And if I...