In this episode, host Courtney Allison speaks with Dr. Jessica Hennessey, cardiologist at NewYork‑Presbyterian and Columbia, about the trend of cozy cardio and how accessible, home‑based movement can support cardiovascular health. Dr. Hennessey explains why moderate‑intensity exercise is both sustainable and effective, offering improvements in cardiovascular function, metabolism, and daily energy levels.

The discussion explores the benefits of walking versus running, how heart rate zones help guide workout intensity, and the importance of rest and active recovery. Dr. Hennessey also highlights how movement helps regulate stress and why strength training—especially for women—is essential for long‑term metabolic and bone health.

Chapters:

Chapter 1: Understanding Cozy Cardio – Convenience, Comfort, and Where it Fits in Heart Health

Understanding cozy cardio and how low‑impact movement supports heart health, and how it lowers barriers to exercise and makes movement feel inviting.
Chapter 2: Why Moderate Exercise Matters

Chapter 3: Cozy Doesn’t Mean Easy—Just Accessible

Chapter 4: Walking vs. Running: Which Is Better for the Heart?

Chapter 5: Using Heart Rate to Guide Your Workout

Chapter 6: The Importance of Rest Days and Recovery

Chapter 7: HIIT: Benefits, Risks, and When to Use It

Chapter 8: Strength Training & Heart Health, Especially for Women

Chapter 9: Building a Sustainable Exercise Routine

Chapter 10: Final Takeaway

Key Topics Covered

• What cozy cardio is and examples
• How cozy cardio focuses on convenience, comfort and lowering barriers to exercise.
• Moderate vs. High-Intensity Exercise
  • How it can improve VO2 max
• Accessibility and sustainability in fitness
• Walking vs. running
• Using heart rate as a guide for exercise
• The importance of rest days
• Exercise as stress reduction
• HIIT workouts: explanation, benefits and risk
• Strength training and heart health
• Building a sustainable routine by choosing activities you enjoy and making movement a natural part of the day

Takeaway Message
Meaningful improvements in cardiovascular health do not require high‑intensity workouts. Moderate, accessible forms of exercise—such as “cozy cardio”—can effectively enhance heart and metabolic function, support stress regulation, and promote long‑term adherence. By prioritizing comfort, sustainability, and consistency, individuals can integrate movement into their daily routines in ways that are both achievable and beneficial for overall health.

Expert Guest

Dr. Jessica Hennessey is an electrophysiologist who specializes in arrhythmia management with a special focus on catheter ablation, pacemakers/defibrillators, and atrial fibrillation at NewYork-Presbyterian/Columbia University Irving Medical Center. Dr. Hennessey is also the Esther Aboodi Assistant Professor of Cardiology (in medicine) at Columbia University Vagelos College of Physicians and Surgeons. She is board-certified in cardiovascular disease and cardiac electrophysiology.

For more health and wellness news, visit NewYork-Presbyterian’s Health Matters website.

What really happens in your brain when you drink alcohol — and what are the long-term effects over a lifetime? In this episode of Health Matters, host Courtney Allison sits down with Dr. Hugh Cahill, a neurologist at NewYork-Presbyterian the One and Columbia, to break down the science behind alcohol’s impact on brain health.

They explore how alcohol affects neurotransmitters to create feelings of relaxation and euphoria, why it can impair memory, coordination, and judgment, and how even moderate drinking is linked to increase risk of brain shrinkage, vascular damage, mood disorders, and dementia. Dr. Cahill also explains the cumulative nature of alcohol’s effects and shares practical, evidence-based ways to protect your brain as you age — highlighting the powerful role of exercise, cardiovascular health, nutrition, sleep, and reducing alcohol intake.

Whether you’re curious about Dry January, worried about memory and aging, or simply want to make informed choices about your health, this conversation offers clear, expert insight into how your habits today shape your brain tomorrow.

Key Topics Covered

• How alcohol affects neurotransmitters (glutamate, GABA, dopamine, endorphins)
• Why alcohol causes relaxation, lowered inhibition, and impaired coordination
• Long-term effects: brain atrophy, neuron loss, memory impairment
• Alcohol as a neurotoxin
• Links between alcohol and:
  • Cumulative, lifelong impact of drinking—even at low to moderate levels
  • Role of exercise in promoting neurogenesis and brain resilience
  • Importance of cardiovascular health, vitamins (B1, B12), and metabolic health
  • Limited evidence that puzzles or brain games prevent cognitive decline
  • Practical brain-health strategies

Takeaway Message
Brain health is shaped by long-term habits. Because alcohol’s effects are cumulative and even moderate use is linked to structural and vascular brain changes, reducing intake — along with exercising and managing cardiovascular risk factors—can meaningfully protect cognitive function and quality of life as we age.

Expert Guest

Dr. Hugh Cahill is an M.D./Ph.D.-trained general neurologist providing comprehensive care for patients with a broad range of neurological conditions at NewYork-Presbyterian and Columbia. Dr. Cahill sees individuals with headaches, seizures, strokes, numbness, weakness, memory changes, and other common neurological concerns. Dr. Cahill as both a clinician and scientist supports an evidence-based approach to diagnosis and treatment, with an emphasis on careful evaluation and clear communication.

For more health and wellness news, visit NewYork-Presbyterian’s Health Matters website.