The son of a biohacker has spent millions trying to keep his body young has responded after an 'erection test' between him and his father went viral. Bryan Johnson is a 47-year-old biohacker and entrepreneur who, for the pasr five years, has spent more than $2 million (£1.6 million) on trying to reverse his physical aging process.

Biohacker Bryan Johson claims to have stalled the progress of aging in his new Netflix documentary, Don’t Die.

Bryan has not only monitored, but also shared the results of his biohacking efforts with the world. A comprehensive dataset, ranging from his heart rate

Age-revering millionaire Bryan Johnson follows an intensely detailed and scientific regimen aimed at reversing the ageing process.