Scientists have identified a simple way for you to create a "reserve fund" to fight cancer in the future.

According to a newly published study in the Journal of Sports Medicine, engaging in regular physical activity before being diagnosed with cancer can reduce the risk of disease progression and mortality—even at modest levels.

A research team from Wits Sport and Health (WiSH) at the University of the Witwatersrand (South Africa) analyzed data from over 28,000 patients diagnosed with stage 1 cancer.

The participants were divided into three groups based on their previous physical activity habits:

• Sedentary (little to no physical activity)
• Low physical activity
• Moderate to high physical activity (at least 60 minutes of moderate-intensity exercise per week)

After 13 years, 34.5% of them experienced cancer progression, meaning the disease had metastasized to other parts of the body. Meanwhile, 81% remained alive by the end of the study period.

When comparing these outcomes with their physical activity levels, scientists found that even engaging in light activity—less than 60 minutes per week—reduced the risk of cancer progression by 16% compared to those who were sedentary.

For those in the moderate to high activity group, the risk reduction was even greater—27%.

Similarly, the overall mortality rate from any cause was 33% lower in those with low physical activity compared to sedentary individuals, while those engaging in moderate to high activity saw a 47% reduction in mortality risk.

According to the study authors, these findings underscore the crucial role of physical activity in preventing and mitigating cancer.

Physical activity strengthens the immune system by increasing the number of natural killer cells, lymphocytes, neutrophils, and eosinophils—natural "warriors" that help the body combat disease, according to the study cited by SciTech Daily.