Ageing is something that happens to us all (if we're lucky) but one expert has said there's a particular body part which can indicate how long you'll live for.
Many people try all sorts of weird and wonderful techniques and concoctions to fend off the passing of time, but it seems it could be simpler than that.
While some people try to 'biohack' themselves to resist getting older, others try botox and filler, while some swear by a super green smoothie or the latest supplement.
However, it could be as simple as not missing out this bit the xext time you go to the gym.
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Dr Sood on TikTok shared a video about the importance of leg strength as we age. In it, an expert is seen saying: "The stronger your thighs are, the stronger your quads are, the longer you live."
He reacted to the claims, saying: "The secret to long life might be in your thighs, recent studies show that skeletal muscle strength, particularly in your quadriceps, is a strong predictor of overall health and longevity."
The doctor continued: "In patients with coronary artery disease or CAD, stronger quadriceps are linked to significantly lower risk of all cause and cardiovascular related mortality.
"But it's not just CAD patients, research shows that greater upper and lower body strength can reduce the risk of death across the general population, regardless of age."
He added: "So remember, leg day is not just about fitness, strengthening your legs with exercises like squats, lunges and resistance training can actually help you add years to your life."
The medical expert went on to caption the video: "Correlation doesn't equal causation, but it makes sense if someone has strong leg muscles it's more likely than not they are also living an overall healthy lifestyle.
"The point is to make sure this is part of your routine," he added.
"Although muscle strength in general is great for overall health, your leg strength might be more important than you think. Don't skip leg day!"
Commenters who hate leg day were found in the comment section, with one joking: "Can't believe sumo squats are saving me even though I get knee pain from it."
"Thicc thighs save lives!" added another, while one person was pleased: "So my thunder thighs will make me live longer?"
Not everyone agreed though, with one saying: "You can get around better with stronger legs but my mother-in-law had weak everything and she lived to 100 and was never sick."
Another agreed: "My great grandma lived to 105 and she never lifted heavy in her life!"
According to the NHS, strength exercises can improve your health and mobility.
Jen Thomas