Catch up TV
2018: 9. Body Clock: What Makes Us Tick?
We all have a biological clock ticking away inside us that governs our daily rhythms. This affects our health as much as our diet and whether we exercise. So what can we do to manage this internal clock better?\n\nTo find out, evolutionary biologist Ella Al-Shamahi locks former commando Aldo Kane in an abandoned nuclear bunker with no way of telling the time - for ten days. Monitored around the clock by a team of scientists, he carries out a barrage of tests to uncover exactly what makes our body clock tick.\n\nAbove ground, Ella meets two time-starved couples to test the latest thinking on how we can manage our body clocks better. In trying to improve their sleep, and their lives, she uncovers practical advice that we can all take on board. Studies on shift workers show that regularly disrupting our sleep makes us more at risk of diabetes, heart disease and even cancer. So getting to grips with our biological clock couldn't be more important.
Source: BBC 2
Most recent episodes of Horizon
Horizon
1997-1998: Mir Mortals
First transmitted in 1998, this is the story of four men who orbited Earth on board the ill-fated Mir space station, which NASA declared unsafe in 1991. Although Mir had been li ...
10-02-2026
BBC 2
Horizon
2022: How To Sleep Well With Michael Mosley
A third of the population regularly struggle with our sleep, which rose to one in two during the pandemic - the highest it’s ever been. However, as more and more people se ...
07-01-2026
BBC 2
Horizon
2020: Hubble: The Wonders Of Space Revealed
To celebrate the 30th anniversary of its launch, this film tells the remarkable story of how Hubble revealed the awe and wonder of our universe and how a team of daring astronau ...
24-04-2025
BBC 2
Horizon
2020: What's The Matter With Tony Slattery?
Tony Slattery was one of the most gifted TV comedians of the late 80s and early 90s. One of the Cambridge Footlight set that included Stephen Fry, Hugh Laurie and Emma Thompson, ...
10-02-2025
BBC 2
Horizon
Life Story: A Horizon Special
It's 1951. There's a race on, and two of the brightest and brashest young men in Cambridge are determined to win it. The prize is glittering. Eternal fame, glory and almost cert ...
11-12-2024
BBC 2
Most popular episodes of Horizon
Horizon
2018: 9. Body Clock: What Makes Us Tick?
We all have a biological clock ticking away inside us that governs our daily rhythms. This affects our health as much as our diet and whether we exercise. So what can we do to m ...
04-02-2020
BBC 2
Horizon
1997-1998: Mir Mortals
First transmitted in 1998, this is the story of four men who orbited Earth on board the ill-fated Mir space station, which NASA declared unsafe in 1991. Although Mir had been li ...
10-02-2026
BBC 2
Horizon
2021: 1. Horizon Special: The Vaccine
The extraordinary inside story of the biggest scientific challenge of our age – following a small band of vaccine scientists around the world who took on Covid-19 and ulti ...
07-07-2021
BBC 2
Horizon
The U00a310 Million Challenge
Series exploring topical scientific issues. To celebrate its 50th birthday, Horizon invites the public to play a role in tackling the greatest challenges facing science today.
11-06-2014
BBC 2
Horizon
2014-2015 - Inside The Dark Web
Series exploring topical scientific issues. With many concerned about internet surveillance, Horizon meets the hackers and scientists whose technology is fighting back.
03-09-2014
BBC 2
Horizon
2011-2012 - The Core
For centuries people have dreamt of reaching the centre of the Earth. Now scientists are uncovering a bizarre and alien world that lies 4,000 miles beneath our feet.
31-05-2018
BBC 2
Horizon
2013-2014 - Where Is Flight Mh370?
Horizon tells the inside story of the search for Malaysia Airlines flight MH370, with access to the key players on the frontline in the southern Indian Ocean.
11-07-2014
BBC 2
Horizon
2014-2015 - Should I Eat Meat? - The Big Health Dilemma
Series exploring topical scientific issues. Dr Michael Mosley investigates the latest science on eating meat and puts the studies to the test by going on a high-meat diet.
18-08-2014
BBC 2