Thời lượng hoạt động thể chất như thế nào để tránh béo phì?
Theo Tổ chức Y tế Thế giới, người lớn cần tham gia các hoạt động thể chất ít nhất 2,5 giờ/tuần. Đối với trẻ em, thời lượng thích hợp là tối thiểu 1 tiếng/ngày.
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