Group 1 - The article emphasizes the importance of hydration during summer workouts, advising not to wait until feeling thirsty to drink water [1] - Experts recommend maintaining a room temperature of 25℃ to 28℃ during exercise to prevent health issues such as dizziness and nausea [3] - It is noted that muscle soreness after exercise can be normal, but severe symptoms like tea-colored urine may indicate rhabdomyolysis [5][7] Group 2 - The distinction between weight loss and fat loss is highlighted, with experts suggesting that effective fat burning occurs when heart rate reaches 60%-70% of maximum heart rate [9] - Recommendations include controlling workout duration to 40-60 minutes and maintaining a heart rate of 120-140 beats per minute [9] - The article advises against excessive use of massage guns after intense workouts, suggesting simpler methods for muscle relaxation [11]

Group 1 - The core idea of the articles highlights the increasing demand for fitness and sports activities in China, with 540 million people regularly participating in physical exercise, representing over 38.5% of the population [1] - By 2024, the national physical fitness qualification rate in China is projected to reach 84.8%, an increase of 4.5 percentage points compared to the first national fitness monitoring in 2000 [1] - The development of diverse sports facilities, such as "pocket courts" in communities and specialized fitness areas in parks, is enhancing accessibility for citizens and tourists [2] Group 2 - Various sports venues are being designed to cater to different age groups, with facilities specifically tailored for children and the elderly to address their unique health needs [4] - The introduction of maintenance systems, such as QR codes for reporting damages, ensures timely repairs and upkeep of sports facilities [6] - Community sports events are becoming increasingly popular, encouraging local participation and engagement in fitness activities [7] Group 3 - Emerging niche sports, like pickleball, are gaining popularity among younger demographics, with significant increases in participation rates, such as a 50% rise in foot traffic at pickleball venues in Wuhan [11] - The articles emphasize the importance of scientific approaches to fitness, particularly during summer, highlighting hydration and exercise intensity as key factors for effective workouts [12][20] - Experts recommend a balanced approach to weight loss, distinguishing between weight reduction and fat loss, and suggest maintaining a heart rate of 60%-70% of maximum for optimal fat burning [20]