October 13, 2025 : A leading neurologist has cautioned that lifting heavy weights without proper technique or medical clearance can cause dangerous spikes in blood pressure — in some cases exceeding 300 mmHg systolic, which can trigger serious health emergencies.
According to Dr. Rajesh Bhatia, Senior Neurologist at Fortis Hospital, sudden and extreme exertion during intense gym workouts or heavy manual labor can sharply increase blood pressure, even in otherwise healthy individuals. “During maximal lifts or when holding the breath under strain, blood pressure can rise to levels that put immense stress on the heart, brain, and blood vessels,” Dr. Bhatia explained.
This temporary but severe rise, known as the Valsalva effect, occurs when people strain or hold their breath while lifting heavy loads. The pressure can reduce blood flow to the brain and heart, potentially leading to dizziness, fainting, or — in rare cases — vascular rupture or stroke.
Who Is at Risk
Medical experts warn that certain groups are at greater risk, including:
- Individuals with high blood pressure or heart disease
- Those with a family history of stroke
- People who engage in intense gym workouts without supervision
- Older adults or anyone with undiagnosed cardiovascular conditions
“People often underestimate the hidden risks of overexertion,” Dr. Bhatia said. “Even young, fit individuals can experience extreme BP spikes during heavy squats, deadlifts, or leg presses if they lift beyond safe limits or forget to breathe correctly.”
Safer Lifting Practices
Doctors recommend several precautions:
- Avoid holding your breath during exertion; exhale while lifting.
- Start light and gradually increase weights under professional guidance.
- Monitor blood pressure regularly if you exercise intensely.
- Seek medical advice before beginning a high-intensity training routine, especially if you have hypertension.
Fitness trainers echo the sentiment that correct breathing and posture are essential for both safety and performance. “Strength training is healthy when done smartly,” said Ritika Sharma, a certified strength coach. “The problem arises when people push too hard, too soon, without understanding their body’s limits.”
The Takeaway
Experts emphasize that while resistance training is beneficial for long-term cardiovascular health, overexertion and poor technique can be dangerous. Listening to the body, following professional guidance, and avoiding competitive lifting without preparation are key to preventing sudden blood pressure spikes and associated complications.
Summary
Health experts warn that lifting heavy weights can dangerously raise blood pressure beyond 300 mmHg, risking heart or brain injury. Proper breathing, technique, and supervision are essential for safety.