What Is 75 Soft? What a Dietitian and Personal Trainers Think of 75 Soft Who Should Try (and Avoid) 75 Soft? The 75 Soft challenge is a 75-day plan to bolster health and fitness with nutrition, fitness, and mental health components. Fitness and nutrition experts say 75 Soft is overall a sustainable, doable, and accessible plan for improving health and fitness. Experts deem the 75 Soft challenge as a realistic, doable approach to diet and fitness behavior change.
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