Explore Journal

Carbohydrates Aren’t Just Fuel

Carbohydrate metabolism supplies more than immediate energy, providing glucose-derived material that cells can store or use to build molecules.

Stopped Training? What Happens to Your Fitness?

Detraining can reverse exercise adaptations when training stops or falls, but different fitness qualities decline at different rates.

Why Losing Appetite with Age Can Become a Nutrition Problem

Appetite loss in older adults can push food intake below energy needs, increasing the risk of unintended weight loss even as calorie needs decline.

Losing Muscle Can Affect Your Metabolism

Muscle loss can contribute to a lower resting metabolic rate with age, but changes in muscle mass alone do not explain the full decline.

What Does Training Volume Measure?

Training volume measures how much exercise occurs over time, but the calculation must fit the activity and does not capture every aspect of load.

How to Build an Exercise Plan You Can Stick With

A sustainable exercise plan starts with manageable demands and adapts to everyday barriers, giving continued participation room to survive disruptions.

Nutrition Can Become More Challenging with Age

Older adults may need fewer calories while still needing nutrient-rich foods, making adequate nutrition within a smaller intake more challenging.

Physical Activity vs. Exercise: What’s the Difference?

Physical activity includes everyday movement that uses energy, while exercise adds planned, structured repetition to improve or maintain fitness.