American swimmer Michael Phelps, the most decorated Olympian of all-time, said it was more important to him to save a life than win a gold medal as he detailed his struggles with depression.

Swimming instructor, lifeguard and adventurer Yane Petkov - Bulgaria's answer to Houdini and Michael Phelps combined - reclaimed on Tuesday the Guinness world record for swimming along with his hands and feet tied while fully wrapped inside a sack.

Olympic swimming icon Michael Phelps speaks to CNN Sport about his struggle with depression and what it's taught him about himself.

Ten-year-old swimmer Clark Kent Apuada recently beat Michael Phelps' 100-meter butterfly record at the Far Western Championships.

Both athletes credit mental health help with transforming their lives.