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Tamannaah Bhatia’s fitness coach shares 3 worst exercises for core: 1 of them can make your waist look bigger

Published on: Oct 22, 2025, 11:01:23 IST
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Fitness coach Siddhartha Singh warns against sit-ups, Russian twists, and side bends, citing risks of neck strain, lower back overload, and thickened obliques, respectively. (instagram/@officialsiddharthasingh, AFP)
Fitness coach Siddhartha Singh warns against sit-ups, Russian twists, and side bends, citing risks of neck strain, lower back overload, and thickened obliques, respectively. (instagram/@officialsiddharthasingh, AFP)

Fitness coach Siddhartha Singh warns against three core exercises that might do more harm than good. Are you doing any of these?

Did you know core exercises like sit-ups can strain your neck and lead to upper back injuries, offering little core benefit? And Russian twists may overload your lower back, causing injury and wasted time? Or that even side bends can make your waist appear thicker by bulking up obliques? Also read | Fitness coach says 'worst exercise on the planet has to be burpee'; shares what to do instead to lose weight

Celebrity fitness coach Siddhartha Singh, who has trained actor Tamannaah Bhatia, took to Instagram on October 21 to talk about these 'three worst exercises for your core'. In the video he posted, Siddhartha also advised focusing on alternative exercises for better core development.

According to Siddhartha, here are the three ineffective core exercises:

1. Sit-ups

He said, “The first on the list is the sit-up. It does absolutely nothing for your core. The only thing this is going to give you is a strained neck and high chances of an upper back injury.”

2. Russian twists

He added, “The second on the list is the Russian twist. I highly doubt any Russians are doing this for their core. It can massively overload your lower back and lead to injury and a lot of wasted time.”

3. Side bends

Siddhartha concluded, “Exercise number three is something that I have wasted a lot of time on and have seen absolutely... exercise number three is the side bend. Did you know the side bend can actually make your waist look bigger? The side bend trains your obliques. And when you train your obliques, they become bigger. And that could actually make your waist look much thicker.”

Instead of these workouts, Siddhartha suggested, you 'do these core exercises':

1. Side planks

2. Deadbugs

3. Pallof press

Note to readers: This report is based on user-generated content from social media. HT.com has not independently verified the claims and does not endorse them.

This article is for informational purposes only and not a substitute for professional medical advice.

  • Sanya Panwar
    ABOUT THE AUTHOR
    Sanya Panwar

    With a keen eye for detail and a heart for storytelling, Sanya is a seasoned lifestyle journalist who has spent over a decade documenting the intersection of aesthetics and substance. Since stepping into the media world in 2012, she has cultivated a career defined by versatility, curiosity, and an unwavering passion for what makes life both beautiful and meaningful. Over the last many years, she has navigated the fast-paced realms of health, wellness, fitness and fashion while pivoting seamlessly into the nuances of decor and travel. Her work often explores the deeper layers of modern living, delving into art and decor trends that transform spaces, insightful perspectives on gender, parenting, and mental health, immersive travel narratives that capture the essence of a destination. A self-proclaimed aesthetics enthusiast, Sanya doesn't just report on trends — she analyses them. Whether she’s identifying the next shift in fitness or discovering a breakthrough in design, she uses her platform to spark meaningful conversations that resonate with a contemporary audience. Sanya is an alumna of St. Xavier’s College, Kolkata, and the Asian College of Journalism (ACJ), Chennai, where she honed the investigative rigour she brings to her lifestyle reporting today. When she isn't chasing deadlines or conducting interviews, Sanya practices what she preaches. You’ll likely find her sipping matcha, practicing yoga, or scouting the newest cafes. Above all, she finds her balance in nature — whether it's a quiet hike or a moment of reflection in the outdoors, she remains constantly inspired by the tranquillity of the natural world.Read More

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