Don’t Let Your AC Give You the Cold Shoulder

For many people, there is nothing more comforting than slipping under the covers in a cold air-conditioned (AC) bedroom after a sweltering day. Sleep experts have long advocated for cooler sleeping environments for more restorative sleep. However, many people sleeping in a cold AC room wake up with a stiff neck, aching shoulders, a sore back, and joint pains. Health experts say that excessively cold AC bedroom temperatures can affect muscles, circulation, and pain perception, particularly among vulnerable groups.

Left Out In The Cold

Certain groups are more sensitive to cold sleeping environments than others. According to Dr. Deepak Kumar Mishra, Director & Head – Orthopaedic & Robotic Joint Replacement Surgery Unit– I, Asian Hospital, “Individuals with arthritis, chronic pain syndromes, fibromyalgia, previous injuries, or age-related joint degeneration often report worsening stiffness and discomfort when exposed to colder temperatures.”

Orthopaedic specialists explain that cold temperatures can cause muscles to tighten and blood vessels to constrict slightly, which may contribute to feelings of stiffness upon waking. While sleeping in a cold room does not directly damage muscles or joints, prolonged exposure to low temperatures may make existing discomfort more noticeable.

Uncomfortable Coldplay

People often assume that morning aches are caused by poor sleep posture alone, but the sleep environment also plays a role. “Sleeping in an icy-cold bedroom can leave your muscles tense and lead to soreness, aches and pains,” explains Dr Sahil Patil, a general physician, adding, “especially those suffering from musculoskeletal ailments.”

While cold weather does not directly harm joints, it can influence pain perception, muscle flexibility, and joint mobility. Dr Mishra says that ageing muscles and joints are often less adaptable to temperature changes. Similarly, individuals recovering from injuries may experience increased tightness around healing tissues when exposed to prolonged cold environments.

Sunita Sharma (68), a retiree from Mumbai, sleeps better in a cool room. “But when the AC is set too low, I wake up with stiffness in my knees and shoulders,” Sharma said. “The discomfort reduces when I keep the AC temperature slightly higher.”

A similar experience was reported by Rohan Verma (34), who spends long hours working at a desk. “I would set the AC to the coldest setting and sleep. I started waking up with neck and upper-back stiffness almost every morning,” Verma says. “Once I adjusted the temperature and changed the airflow direction, the problem improved significantly.” Their discomfort mirrors complaints of many people who spend long periods in AC environments.

Temperature Control

Experts say that the solution is not to abandon AC altogether. Instead, the focus should be on maintaining a cool yet comfortable sleeping environment. Most sleep specialists recommend bedroom temperatures between 18°C and 22°C for optimal sleep quality. However, the ideal setting can vary depending on age, health conditions, humidity levels, bedding, and personal comfort.

Dr Mishra says, “Adequate bedding, proper sleeping posture, and moderate room temperatures can help reduce the risk of waking up with aches and pains while still supporting healthy sleep.”

Health Fact File

While occasional soreness after sleeping in a cold room is generally not a cause for concern, persistent or worsening symptoms should not be ignored. Experts caution that recurring pain may indicate an underlying medical condition rather than simply an environmental issue. A medical evaluation may be necessary to rule out underlying musculoskeletal conditions.

Conditions such as arthritis, chronic inflammation, spinal problems, or unresolved injuries may become more noticeable under colder conditions, making professional assessment important when symptoms do not improve.

The Right Balance

While cooler bedrooms can promote better sleep, excessively cold environments may leave some people waking up with unnecessary aches and stiffness. Maintaining a balanced room temperature, using supportive bedding, avoiding direct blasts of cold air, and paying attention to posture can help preserve both sleep quality and musculoskeletal health. For those prone to joint pain or recovering from injuries, finding that balance may be the difference between waking up refreshed and waking up sore.

A REAL ICE-SORE

• People with arthritis, chronic pain syndromes, fibromyalgia, previous injuries, or age-related joint degeneration often report worsening stiffness and discomfort when exposed to colder temperatures.

• Rather than setting the AC to its lowest temperature, aim for a moderate and stable room temperature.

• Direct airflow should also be avoided, as cold air blowing continuously onto the neck, shoulders, or joints may increase discomfort.