Twice a week my alarm goes off at 5.45am so I can get to the gym for HYROX training, although in reality my five and seven year olds are often my alarm clock.

My routine happens around the things I am doing for the children: breakfast time, packing lunches and getting everyone moving. Once that is under control, I shower, have coffee, take Advanced ID with my breakfast and start the day.

As a dermatologist, my routine is less elaborate than people expect. In the morning I use an antioxidant serum and a tinted zinc SPF.

If I don’t have an event in the evening, I cycle to and from work. It’s 10 minutes away, but my patients laugh, as I typically cycle in a dress and bring my four-inch heels in my bag.

and I don’t follow a restrictive diet. Breakfast is oranges, eggs, toast with jam and lots of coffee, after taking Advanced ID. I try to get plenty of protein and whole foods, but love food and eating out. I have no desire to make nutrition joyless.

When possible, I fit in a couple of five- to eight-kilometre runs at the weekend. My main goal is maintaining strength, cardiovascular fitness and to keep doing the things I want to do as I get older.

and have mild Raynaud’s, so cold plunges were never for me. My slightly unusual indulgence is a hyperbaric oxygen chamber, which I have at home. I also have an Eight Sleep bed, which I love. I am fascinated by new technology, but I am pragmatic about it. None of it compensates for not exercising, eating badly or getting too little sleep.

looking most at heart rate variability, recovery and sleep performance. Since taking Advanced ID my WHOOP age is seven years younger than my original age, my HRV considerably higher and my sleep performance improved.

A wearable cannot prove that one intervention caused every change, but seeing objective biometric changes alongside how I am actually feeling is important to me.

with friends. I have an incredibly close group spending time together resets me faster than almost anything else. Exercise helps, too.

Attitude is underestimated. Difficult things happen to us all. I try not to catastrophise or allow a bad day to become the story of the week. Optimism, humour and being near those you love are important parts of ageing well.

My relationship with screen time is terrible! Between medicine, media, emails and running businesses, my phone and laptop are almost always beside me.

I see 35 to 40 patients a day and get home at about 6.30pm. Once there, I want to see the children, hear about their day and get them to bed at about 8pm.

After that, I am often back on my laptop while eating, because there is work from my businesses that I cannot touch during clinic hours. If I have time, I get into the hyperbaric chamber. Then it is skincare — usually retinoid and moisturiser — and bed.

To me, the biggest factor in consistently good sleep is allowing enough time for it. You cannot optimise six hours into eight, however sophisticated the technology beside your bed is.

I have no interest in chasing immortality. I want to live for a long time, obviously, but more importantly I want to remain strong, sharp, independent, useful and able to enjoy my family and friends for as many of those years as possible. That, to me, is health span.

Professor Catriona Ryan is the co-founder of ID Formulas, a consultant dermatologist and clinical professor at University College Dublin.