Although fatigue is commonly experienced in many highly demanding occupations (e.g., military, first responders, etc.), it is poorly defined. Fatigue can strongly affect occupational performance by negatively influencing the ability to interact with the world by altering the capacity to think, move, feel, see, and speak. The first step in fatigue risk management strategies is to establish a context. The context of this narrative review is to specifically describe and discuss the 6 overarching types of occupational fatigue: cognitive, physical, burnout, emotional, visual, and vocal fatigue, and how each affects varying occupations. Furthermore, fatigue type can be influenced by several intrinsic factors, such as sleep deprivation, circadian alignment, ultradian process, sleep homeostasis, and health factors. Similarly, extrinsic factors influence fatigue, such as workload, shift work, and environmental issues. Understanding the types and contributors to occupational fatigue may help clarify the context of occupational fatigue and serve to guide future occupational fatigue management.

This article seeks to help personal trainers understand the physiological effects of stress and helpful ways they can drive positive changes for their clients through exercise.

This article uses relevant research and literature to provide suggestions for optimal recovery in tactical operators.

Trainer Tips are infographics designed to help you, an NSCA professional, educate clients and promote your services. These member-only resources can be used for client education, motivation, and promotion.

The purpose of this article is to help bring awareness of athletic recovery by useful fatigue monitoring and managing tools, such as external and internal load examples.

This article defines and reviews the allostatic load theory in tactical personnel.

This article features the recharge skate—an in-season hockey conditioning drill, designed by the authors, to maintain hockey-specific energy system fitness throughout the competitive season.

Athletes have sought out intermittent fasting as a strategy to optimize performance. However, it is important to critically evaluate the research available in order to establish specific recommendations and determine if intermittent fasting is safe or effective.

It is important for strength and conditioning coaches, sport coaches, athletic trainers, and administrators to recognize and address the evidence of stress within student-athletes in order to avoid chronic stress-related anxiety and injury.

High-Intensity Resistance and High-Impact Training and Bone Mineral Density—a Narrative Review: Part 1