Leah Walsh
Leah used AI to train for her second half marathon and achieved a personal best
After a festive period filled with indulgent treats and relaxation, many people head into January looking to get their fitness back on track.
But could AI be changing the fitness industry by offering an alternative to personal trainers?
Leah Walsh used an AI tool to train for last-minute training for the Cardiff Half Marathon.
The 21-year-old from Aberdare in Rhondda Cynon Taf, said she liked the freedom to ask it questions any time of day – something she felt was not possible with a personal trainer.
Leah used an AI-powered running app that gave her personalised plans with audio coaching and pace setting for her first half marathon in 2024.
She said she asked it to create a plan combining running and the gym, and it produced an 11-week programme tailored to her race date and goals.
Leah then tweaked the schedule to suit her lifestyle, which she said was convenient.
The following year, she chose a different tool because it was cheaper and she could ask it questions at any time of day. She finished a minute faster than her goal time.
She said she did not want to feel pressure from a human personal trainer.
“With AI you have to motivate yourself, which I quite like,” she added.
Richard Gallimore
Richard Gallimore has been using AI for his fitness and diet plans, and says he feels stronger than ever
Meanwhile, Richard Gallimore, 23, from Swansea, has been using AI for his fitness and diet plans, and said he has never felt stronger, increasing his bench press from 70kg (150lb) to 110kg (240lb).
Richard turned to a bot for help after being forced to walk a running event.
“I just knew I need to sort myself out,” he said.
The free tool built a workout and diet plan tailored to his goals, and created structured routines.
“I train for about two hours a day and I’ve seen a real difference,” he said.
A Which? survey in November 2024 compared prices for 17 of the biggest gym brands and found the average membership cost £38 a month, based on standard full-access plans.
Prices ranged from £23 at the cheapest chain to £132 at the most expensive.
According to research by PureGym, personal trainers set their own rates, typically £30-£65 per 45-60 minute session outside London and about £45-£65 in London.
Clients will use a trainer once or twice a week and work with them for a few months, it found, but said it was completely flexible.
Michael James
Personal trainer Dafydd Judd believes AI will never replace the human connection that comes from in-person training
Personal trainer Dafydd Judd, from Cardiff, said AI can be useful to speed up progress, but believes it will never replace the human connection and accountability that in-person coaching offers.
The 37-year-old, who has 12 years experience as a trainer, specialises in older adults and injury rehabilitation. He said some of his clients also use AI.
“I think it’s very valuable, more knowledge is good,” he said.
“I think the more that people are online the more they’ll want human connection because they want the warmth from the understanding that is missing from a computer.”
Dafydd said AI can educate clients and make coaching more effective.
But he said real commitment comes when people show up in person for training.
“As useful as it is at 2am, a computer won’t keep you accountable at 7am before work,” Dafydd added.
For many, he said, the gym is a place to leave phones behind and stop being glued to screens.
