Chapters 2 to 8 and the advanced section

Unlock the full handbook

Chapters 0 and 1 are free to read. The rest, the fourteen test panel, the master targets table, the six eating rules with two full sample days, the strength programme, fat loss, sleep, stress, the twelve week plan and the advanced section, opens with the licence key from your receipt.

Purchases open soon. The full handbook is nearly ready. In the meantime, read chapters 0 and 1 free and we will email you when it launches.

Already bought it

Find your licence key in your Gumroad receipt email, paste it here. It's also on your Gumroad library page, and looks like XXXXXXXX-XXXXXXXX-XXXXXXXX-XXXXXXXX.

You stay unlocked on this browser for a year. Use the same key on your phone and laptop.

Get the handbook

US$67 US$99

Founding price until 30 November

One payment, free updates for life, the PDF included for offline reading, plus the toolkit: blood test tracker, twelve week planner, strength log and the GP script.

Read chapters 0 and 1 free

30-day money-back guarantee. If it isn't for you, reply to your Gumroad receipt within 30 days for a full refund.

Buying opens soon. Prices will be in US dollars; your card is charged in your own currency.

Problems with a key? Email hello@thebrowngene.com with your receipt and it will be sorted within a day.