Kim Kardashian’s PT Sonata Grea: Why strength training is really about longevity, confidence, and mental health
Sonata Grea’s message on On Purpose is clear from the start: fitness is not just about how you look, but about how long and how well you can live. In a wide-ranging conversation with Jay Shetty, the founder of We Rise and Zenoa breaks down why strength training matters, how to build habits that actually stick, and why starting small may be the most powerful move of all.
The episode is less about chasing short-term transformation than about building a body and mind that can hold up over time. Grea repeatedly returns to the same idea: the best workout is the one you can sustain, and the best health strategy is one rooted in consistency, self-respect, and love.
Start small, stay consistent
When I saw what kind of a difference working out did for my mental health, (that is) when everything changed.
One of the episode’s strongest themes is Grea’s insistence that people stop waiting for the “perfect” time to begin. If all you can manage is five minutes, she argues, that still counts — because the point is to build a habit, not win a sprint.
She suggests making fitness easier to access by setting a regular workout time, laying out clothes the night before, and removing as many barriers as possible. Her advice is practical rather than aspirational, built around the reality that motivation comes and goes, while routine is what carries people through.
Start small.
Grea frames momentum as something that is earned through repetition, not intensity, and says that even tiny daily commitments help create confidence and consistency.
Why strength matters
Grea makes a strong case for strength training as the foundation of long-term health. She explains that building muscle and bone density becomes increasingly important with age, especially for women, because both begin to decline over time.
She notes that bone density peaks around the late 20s, then gradually decreases, while muscle mass also starts to drop as people get older. That makes strength training less of a vanity goal and more of a longevity tool, especially when it comes to reducing injury risk and improving recovery later in life.
For me, strength training is sort of like the golden standard that’s what’s going to build muscle mass and a vast array of other benefits that not every modality has… Strength training is proven to increase bone density and muscle, which are so crucial to longevity.
For Grea, lifting weights is about feeling capable, resilient, and prepared for the future — not about becoming excessively muscular, which she says is one of the biggest misconceptions women have about strength training.
Mental health and movement
The conversation also moves into Grea’s personal story, including how fitness became a turning point in her mental health journey. She shares that she struggled with depression, anxiety, and disordered eating, and that working out for the right reasons changed everything.
Rather than framing exercise as punishment, she says the shift happened when she began training to feel stronger and more stable mentally. That change, she explains, helped her replace self-criticism with self-care and gave her a healthier relationship with her body.
I was nurturing my body for health.
That perspective runs through the entire interview. She argues that exercise, when done consistently, can support mental health in a way that is often more powerful than people realize, and she points to research suggesting that regular physical activity can significantly reduce symptoms of depression and anxiety.
The role of mindset
Grea also emphasizes that results are tied as much to mindset as to programming. She encourages people to stop relying on feelings of motivation and instead act anyway — to put on their shoes, get moving, and treat exercise like brushing their teeth.
She extends that same logic to self-talk. In her view, the words people use about their bodies matter, and negative language can make it harder to reach health goals. She says the most effective approach comes from a place of love, not shame.
Start from a place of love.
That idea also shapes how she works with clients. Whether someone wants to lose weight, build muscle, or simply feel better, she says the starting point should always be respect for the body they have now, not hatred of the body they are trying to change.
What really works
Throughout the episode, Grea argues against extremes. She says people do not need to train for hours a day or overhaul their lives overnight. Instead, progress comes from repeating manageable actions over time and building a system that fits real life.
She also explains that exercise doesn’t have to be one-size-fits-all. Strength training may be her “golden standard,” but she respects yoga, Pilates, cardio, and other modalities as long as they support a person’s goals and remain sustainable.
Act, don’t wait for the feelings.
Grea’s message is not about perfection or punishment; it is about building a lifelong practice of movement, one small step at a time, so that fitness becomes less of a task and more of a way of life.
This recap is based on Sonata Grea’s appearance on Jay Shetty’s On Purpose podcast. For the full episode, click on the YouTube link at the top or listen wherever you get your podcasts.