Scientists say it all depend on caffeine habits, lifestyle and one factor we have no control over: our genes.
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Ed Sheeran asked me to donate $2m in aid, Robert Kraft says after Macklemore backlash
It comes after Macklemore pledged $1m to Palestinian causes, challenging the tycoon to match the sum.
Climate change likely played role in Nepal-Tibet flood, study finds
More than 1,400 people were killed and thousands remain missing following the deluge on 26 August.
Why dealing with defeat is key for Lampard at Coventry
BBC Sport columnist Tony Pulis explains why Coventry boss Frank Lampard needs to manage himself as well as his players after their poor start to the season.
Tech treating AI like humans is mistaken and misguided, Microsoft boss tells BBC
Mustafa Suleyman says he believes rival AI firm Anthropic is in effect teaching Claude it "may be conscious".
Palace in war of words with Earl Spencer over claims in Diana book
The row threatens to overshadow a very crowded day for the royals - with the King and Princes William and Harry all attending events.
USA midfielder sues doctors after on-pitch heart attack
United States women's national team player Savannah DeMelo is suing a hospital and two doctors after she suffered a heart attack on the pitch last year.
Verstappen passes 100 amateur karters in 14 laps in exhibition race
Four-time F1 world champion Max Verstappen passes 100 amateur drivers in just 14 laps in an exhibition go-kart race at Silverstone.
Bank of England expected to hold interest rates as it faces tough choices
Forecasts of further rises in the inflation rate mean some analysts expect the Bank to act by the end of the year.
A team that offered hope... then, four months later, Hamas attacked Israel
Can the potential of a golden generation of Israel's footballers, in sport and society, be realised?
Boy abducted by mum has renewed 'sense of purpose'
Alex Batty, who vanished aged 11 in 2017, says a new job has given him renewed purpose.
Mum's Facebook kidney plea prompts 'mind-blowing' gift from total stranger
A woman has undergone a lifesaving transplant after receiving a kidney from a stranger who saw her post on social media.
'My rent was higher than my student loan' - the booming cost of private halls
Private student halls are springing up in Scotland's cities in ever increasing numbers yet rents continue to soar.
Afghan inquiry into alleged SAS war crimes has already cost £58m, MoD figures show
The inquiry has been running for more than three and a half years but has yet to publish any findings.
Steve Rosenberg: Russia's elections will have few surprises, but for the Kremlin they matter
There is no doubt over the outcome of this vote, but for the Kremlin they are still an important moment.
Assad regime planned US journalist Austin Tice's kidnap for weeks, BBC finds
Austin Tice’s abduction was approved by Syria’s former leader Bashar al-Assad, a source claims.
Boy, 13, is new voice of Thomas the Tank Engine
A new Thomas series also stars The Gentleman actor Henry Golding.
The Papers: King's 'astonishing outburst' and 'heartbreak' after search for missing Noah
Several of today's papers splash on the Palace's response to Earl Spencer's claim in his upcoming book about his sister Diana.
OpenAI reveals six more safety issues and unveils plan to disclose incidents
The firm also announced a new system to track, investigate and disclose cases of models misbehaving, or "misalignment".
OpenAI reveals six more safety issues and unveils plan to disclose incidents
The firm also announced a new system to track, investigate and disclose cases of models misbehaving, or "misalignment".
UK prosecutors file for extradition of the Tate brothers from the US
The brothers are facing a total of 59 charges in the UK, including rape. Both men deny any wrongdoing.