Carolinescircuits

Yes — her bio states she has been a personal trainer for 25 years, making her one of the more credentialed fitness creators on social media. She works specifically as a Strength Training Coach and runs her own coaching platform at carolinescircuits.com alongside her content work.

Fit At 50 is her strength-training-focused book that reached the Sunday Times bestseller list. It's built around her philosophy of making effective, sustainable training accessible for people as they age, drawing on her 25 years of personal training experience.

Yes — she is a regular fitness columnist for The Telegraph, one of the UK's major national newspapers. This puts her in a rare group of social media fitness creators who also contribute to mainstream print and digital journalism.

Yes — carolinescircuits.com is her dedicated strength training coaching platform, separate from her free social media content. It's where followers can access more structured programming beyond the workout videos she posts on Instagram and YouTube.

Yes — she has explicit beginner-focused series, including content framed as "Welcome to weights" for those who have never trained with resistance before. Making strength training approachable for newcomers is a consistent theme across her content.

Yes — bodyweight HIIT and home workouts are a central pillar of her content, with dedicated series requiring no equipment at all. She also programs dumbbell-based sessions for people who have basic kit at home, keeping the barrier to entry low.

Based on her Sunday Times bestselling book Fit At 50, she is in her early-to-mid fifties. She openly builds her content around training effectively at this life stage, which has made her a go-to creator for audiences in their forties and beyond.

Her 10-minute express workouts cover targeted areas — core, arms, shoulders, and full-body HIIT — designed for people who cannot fit longer sessions into a busy day. They are among her most-shared content and reflect her core belief that consistency with short workouts beats occasional long ones.

She appears to be UK-based — she columns for The Telegraph, her book reached the Sunday Times bestseller chart, and the United Kingdom is a top audience country for her content. Her broad international following across the US, Brazil, and India has grown well beyond her home market.

Instagram is by far her primary platform, where she has built a following well into the millions — significantly larger than her YouTube subscriber count. She sits in the Macro creator tier and uses Instagram Reels as her main vehicle for short workout clips and express sessions.