We introduce the term “seasonal body image” to refer to within-person variation in body image that occurs across the Gregorian seasons of Spring, Summer, Autumn, and Winter. Herein, we (i) quantified and visualised seasonal body image and its mechanisms, and (ii) identified individual predictors of seasonal body image. Sexual minority men (N = 823) residing in the Northern Hemisphere (n = 659) and Southern Hemisphere (n = 164) provided cross-sectional data about their experiences of body image phenomena in Spring, Summer, Autumn, and Winter. Most reported seasonal body image (∼70 %). As hypothesised, in Summer we observed peaks for body dissatisfaction alongside peaks in four proposed seasonal body image mechanisms: pressure from media advertisements, pressure from peers on social media, the feeling that one’s body is on public display, and appearance comparisons. In Winter, these phenomena were weakest. Effect sizes ranged from small to large (rs = .07–.50) with an average effect size of medium (.38). Seasonal body image was stronger for individuals with greater muscularity dissatisfaction and body fat dissatisfaction, and for higher body-weight and younger individuals. Future research will visualise seasonal body image using a multi-country Twitter database containing several billion tweets spanning multiple calendar years.

我们引入“季节性人体图像”一词来指代人体在春季，夏季，秋季和冬季的格里高里季节中发生的人体图像变化。在本文中，我们（i）量化并可视化了季节性人体图像及其机制，并且（ii）确定了季节性人体图像的各个预测因子。性少数男性（Ñ = 823）驻留在北半球（Ñ = 659）和南半球（Ñ= 164）提供了有关他们在春季，夏季，秋季和冬季的身体图像现象体验的横截面数据。报道最多的季节性身体图像（约70％）。假设，在夏季，我们观察到身体不满情绪达到顶峰，同时出现了四个拟议的季节性身体图像机制：来自媒体广告的压力，来自社交媒体的同伴的压力，一个人的身体在公开展示中的感觉以及外观对比。在冬季，这些现象最弱。效果大小从小到大（rs = .07–.50），平均效果大小为中等（.38）。肌肉不满和脂肪不满的人，以及体重较高和较年轻的人，季节性的身体形象都更强。未来的研究将使用一个包含多个跨历年的数十亿条推文的多国Twitter数据库来可视化季节性人体图像。