The Journal of Aging Research & Lifestyle (JARLife) is an e-only, gold open access, peer-reviewed journal dedicated to advancing a performance-based understanding of aging. In this framework, aging is viewed not solely as the accumulation of disease or risk, but as a dynamic, time-dependent process reflected in cognitive, behavioral, and functional performance.

The journal prioritizes research that characterizes trajectories of change, detects early signals of decline or resilience, and identifies modifiable factors that shape adaptation, compensation, and recovery over time.

JARLife publishes high-quality research on lifestyle and environmental factors as dynamic inputs influencing aging processes. These include, but are not limited to, physical activity, nutrition, cognitive engagement, sleep, stress, social interaction, and digital exposures. Rather than treating these factors as isolated domains, the journal encourages their study as interacting components within complex, real-world systems.

The journal is organized into five initial sections:

1. Physical activity, exercise, and healthy aging
2. Nutrition and healthy aging
3. Cognitive stimulation and healthy aging
4. Geroscience and lifestyle
5. Digital aspects, lifestyle, and healthy aging

These sections are intended as entry points. Submissions that integrate multiple domains or examine interactions across behavioral, biological, and environmental factors are particularly encouraged.

JARLife welcomes original investigations using a wide range of study designs, including observational studies, longitudinal cohort studies, interventional trials, and qualitative research. The journal also publishes Reviews, Meta-Analyses, Perspectives, Letters to the Editor, Methodological papers, and Research Protocols.

Priority is given to studies that:

• characterize longitudinal trajectories and intra-individual variability;
• identify early signals of decline, instability, or recovery;
• investigate interactions among multiple health behaviors and biological systems;
• evaluate multidomain lifestyle interventions;
• translate measurement into actionable strategies for prevention and optimization of aging outcomes.

Particular emphasis is placed on multidomain approaches, including clinical trials that combine two or more lifestyle interventions, as well as longitudinal studies that assess multiple behavioral factors over time. Contributions adopting a life-course perspective are strongly encouraged.

The journal welcomes methodological approaches that capture time-dependent dynamics and system behavior, including repeated-measures designs, trajectory modeling, and other analytical frameworks that move beyond cross-sectional or threshold-based inference.

Submissions that advance the conceptualization and measurement of cognitive, behavioral, and functional performance in aging are especially encouraged.