最好的养生，都是免费的

Core Insights - The article emphasizes that true health and wellness do not require significant financial investment, but rather focus on simple lifestyle changes [4][30]. Group 1: Importance of Sleep - Adequate sleep is highlighted as the most effective method for skin health, with a study showing that participants who slept less than 5 hours per night experienced a 45% increase in wrinkle depth and a 30% decrease in skin elasticity compared to those who slept 7-9 hours [6][15]. - A personal story illustrates the benefits of consistent early sleep, where an individual noticed significant improvements in skin condition after 286 days of going to bed by 10 PM [14][15]. - Experts affirm that good sleep enhances skin metabolism and overall skin health, making it a crucial aspect of personal care [15][19]. Group 2: Mental Stimulation through Reading - Regular reading is presented as a key to maintaining brain health, with examples of notable figures like 饶宗颐 and 巴金, who attributed their longevity and mental clarity to their reading habits [22][24]. - The article suggests that reading helps keep the mind active and can counteract cognitive decline associated with aging [22][24]. - It encourages integrating reading into daily routines to nourish the mind and enhance cognitive abilities [24]. Group 3: Simplifying Life for Mental Well-being - The article discusses the benefits of a simplified lifestyle, where reducing material possessions and unnecessary social interactions can lead to improved mental health and reduced anxiety [26][28]. - A personal account illustrates how adopting a minimalist approach led to better physical and emotional well-being, allowing for more time to engage in fulfilling activities [27][28]. - The message is reinforced that true fulfillment comes from within and that simplifying life can enhance overall quality of life [28][30].