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When we lose weight, we don't just lose body fat—we lose muscle, too. This can be a problem for many reasons, because skeletal muscle is far more than the tissue that helps us move. It plays a crucial role in metabolic health, regulating blood sugar and healthy aging. Losing muscle mass is linked to a reduced mobility, increased injury risk and is thought to potentially impair long-term weight loss. Newly published research showed that weight loss accompanied by aerobic exercise might not be that bad for the muscles after all—and indeed it may have positive effects.
Source: Medical Xpress