健身如果不注意科学性,就有可能达不到锻炼身体的效果。专家指出,健身应该选在日出之后日落之前,并且要遵循安全、适量、循序渐进的原则,否则健身效果就可能事倍功半。专家认为“朝五晚九”正是植物呼吸时,这时周围环境的二氧化碳浓度较高,对健康不利;而在日出之后日落之前,植 If you do not pay attention to scientific fitness, it is possible to reach the effect of exercise. Experts point out that fitness should be chosen before sunrise after sunset, and to follow the safety, moderation, and gradual principle, otherwise the fitness effect may be less effective. Experts believe that “toward the fifth night nine” is the plant when breathing, when the ambient carbon dioxide concentration is higher, not conducive to health; and before sunrise after sunset, planting