My name is Jack and in February I will be going to Siberia to try and cross the worlds deepest lake on foot. It will take 3 days of trekking and pulling a sled in temperatures as low as -30C, and at night camping on the ice in tents. This crossing will definitely be one of the hardest things I have ever done.

It would be amazing if this voyage could inspire you to donate to the Dr Hadwen Trust and help ethical medical science improve the future for all of us. All proceeds go directly to the charity as the expedition is funded 100% by me.

Donating through JustGiving is simple, fast and totally secure. Your details are safe with JustGiving – they’ll never sell them on or send unwanted emails. Once you donate, they’ll send your money directly to the charity. So it’s the most efficient way to donate – saving time and cutting costs for the charity.

*** UPDATE: You can now donate by text- send code COLD75 and the amount you want to donate (£1, £2, £3, £4, £5 or £10) to 70070 ***