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Sleep: the foundation

I make sleep and recovery a priority because how I rest affects how I feel and function the next day. A consistent routine, a quiet environment, and allowing enough time to sleep are practical places to begin.

Most adults need at least seven hours of sleep. If sleep problems persist, a healthcare professional can help identify what’s getting in the way.

My 12–15 minute workout

My workouts are short and intense—usually 12 to 15 minutes at most. I use relatively light dumbbells for movements like curls, overhead exercises, and fly movements, alongside push-ups, sit-ups, and crunches. I keep moving and give it a strong effort. I like to picture the kind of burst our ancestors might have needed to escape a saber-toothed tiger: quick, focused, and demanding. It’s an image that motivates me, not a claim that everyone needs to train that way.

People respond differently to intense exercise. Start at a level that fits your health and build gradually; if you have heart disease or another chronic condition, talk with your healthcare professional about what intensity is appropriate.

Sauna and recovery

Sauna is part of my personal routine and gives me time to slow down. During a sauna session, heat raises heart rate and activates the body’s stress response. In one small study, participants showed signs of increased parasympathetic activity during the cool-down afterward.

Researchers are also studying whether heat affects autophagy, the body’s cellular recycling process. There is not yet a proven sauna temperature or duration that reliably produces this effect in people.

Heat isn’t right for everyone. Stay hydrated and, especially if you have a heart condition or take blood-pressure medication, check with your clinician before using a sauna.

NAD+ and supplements

I’m interested in NAD+ and supplements as part of the wider conversation about aging. NAD+ plays a role in energy metabolism, and researchers continue to study how its levels relate to aging.

Research is still developing; it has not established that NAD+ supplements or injections reverse aging in people. Products and individual needs vary, so review supplements and interactions with your clinician.

In this interview, Sinclair discusses aging research, exercise, fasting, and supplements. It reflects his views and experiences and is not a personal medical recommendation.

Four abilities I want to protect

Grip strength: Strong hands help with everyday tasks like carrying groceries, opening jars, and holding on securely. Grip is one part of overall strength.

Balance: Staying steady can help you move with confidence and reduce the risk of falls. Practice appropriate to your ability, with support when needed.

Cognitive health: Keep your mind engaged through learning, connection, and attention to sleep and overall health.

Flexibility: Comfortable stretching and mobility work can help you maintain the range of motion needed for everyday activities.

These are four priorities in my approach. They work alongside aerobic activity, strength training, recovery, and healthcare suited to the individual.

Telomeres and cellular health

Telomeres are protective structures at the ends of our chromosomes. They are one of the many things scientists study when looking at how cells age. I find the connection between our everyday habits and cellular health fascinating.

Researchers have studied links between exercise and telomeres, but telomere length alone cannot tell you how long you will live, and no single workout is proven to reverse aging.

Could cells regain youthful function?

One area that excites me is epigenetic reprogramming: researchers are exploring whether changing signals that control gene activity could restore some youthful features in cells. Think of it as investigating whether a cell can recover part of its earlier operating instructions.

In experimental studies, researchers have restored some functions in aged mice. This is early research—not an established way to reverse aging in people—but the possibilities are worth watching.