Sleep has increasingly become a casualty of modern lifestyles. Long working hours, late nights and the pressure to remain productive are encouraging many people to treat sleep as something that can be sacrificed.
Dr. Navin Gnanasekaran, Head of Radiology at Apollo Hospitals, Chennai, and author of The 100-Year Blueprint, points to inadequate sleep as an important contributor to the growing burden of poor health.
India’s growing sleep deficit
A large number of Indians are not getting sufficient uninterrupted sleep. Persistent sleep deprivation can add to existing health challenges, including metabolic, cardiovascular and mental health problems.
Most healthy adults require around seven to nine hours of sleep each night. However, modern routines often make it difficult to consistently achieve that duration.
Sleep is the body’s nightly repair system
Sleep is not simply time spent away from work. During sleep, the brain and body carry out important restorative processes that support hormonal balance, metabolism, immunity and overall recovery.
Deep sleep plays an important role in physical recovery, while REM sleep supports functions such as memory, emotional processing and cognitive performance.
Why sleep quality matters
Sleeping for only a few hours or repeatedly interrupting the normal sleep cycle can reduce the time available for these restorative stages.
Chronic sleep deprivation may also affect insulin sensitivity and stress hormones, increasing the risk of problems such as obesity, diabetes and cardiovascular disease. It can also affect concentration, mood and immune function.
Late-night habits can disrupt sleep
The timing of everyday habits can have a significant effect on sleep quality. Heavy meals close to bedtime can interfere with the body's transition into restorative sleep.
Caffeine can also remain active in the body for several hours. Limiting caffeine sufficiently early in the day can therefore help protect deep sleep.
Intense exercise immediately before bedtime may similarly keep the body stimulated, while alcohol can negatively affect sleep quality despite initially making a person feel sleepy.
Don’t sacrifice REM sleep
Waking during the early hours to work is sometimes presented as a productivity strategy. However, cutting sleep short can mean losing important REM cycles that occur later in the night.
Maintaining a complete night's sleep allows the brain to move through its natural sleep cycles and may support memory, creativity and emotional processing.
Small habits, big gains
Improving sleep does not necessarily require complicated interventions. Simple, sustainable changes can make a meaningful difference.
Keeping phones outside the bedroom, reducing bright light before bedtime, maintaining a comfortable sleeping environment and developing a consistent routine are practical steps that can support better sleep.
Rather than attempting to change everything overnight, building one healthy habit at a time can make those improvements easier to maintain.
Build the foundation first
Sleep trackers and supplements may attract attention in the growing longevity space, but the fundamentals remain essential.
A strong foundation of adequate sleep, healthy routines and sustainable habits should come before relying on biohacking or other advanced approaches to improve longevity.
In a culture where sleep is increasingly sacrificed in the pursuit of success, protecting sleep may be one of the simplest and most powerful steps towards better long-term health.