This is an entertaining book by Tim Lebbon about him becoming physically active in his early 40s. The book is written in an enjoyable and witty manner.
Like many of us, Tim had tried to stay fit in adulthood but could never make it “stick”. The turnaround for him was getting talked into participating in the UK’s “3 peaks challenge”. This is climbing the highest peak in each of England (Scafell Pike), Wales (Snowdon), and Scotland (Ben Nevis), all within 24 hours. It is an odd hybrid adventure because in addition to the hours spent hiking the peaks, there is substantial driving time in between. The author accomplished this task and was hooked on outdoor adventures and getting fit to be able to do them. This eventually led to him doing Ironman triathlons and other extreme challenges
The book is a mixture of tips on getting in shape and entertaining reports of various challenges and races the author participated in. He was in his early fifties by the time the book was written, so we follow his 10-year-plus progression.