Lowri Morgan is a well known name: TV presenter, adventurer, ultra-marathon runner. But what is it that has led her to live a life of such extremes? What has enabled her to develop the strength and resilience to tackle some of the planet's toughest environments? Here, Lowri explores the mind and body she has pushed beyond pain, beyond her expectations, and beyond limits.

Mae Lowri Morgan yn adnabyddus fel cyflwynydd teledu, anturiaethwraig a rhedwraig marathonau eithafol. Ond beth sydd wedi'i harwain at fyw i'r eithaf? Beth sydd wedi galluogi ei chryfder a'i gwydnwch i wynebu rhai o amgylchfydoedd anoddaf y byd? Yma mae Lowri yn edrych ar sut y gwthiodd hi ei meddwl a'i chorff trwy'r poen a'i disgwyliadau ei hun.