![IJERPH | Free Full-Text | Risk Assessment and Implications of Schoolchildren Exposure to Classroom Heavy Metals Particles in Jeddah, Saudi Arabia IJERPH | Free Full-Text | Risk Assessment and Implications of Schoolchildren Exposure to Classroom Heavy Metals Particles in Jeddah, Saudi Arabia](https://pub.mdpi-res.com/ijerph/ijerph-16-05017/article_deploy/html/images/ijerph-16-05017-g003.png?1577747877)
IJERPH | Free Full-Text | Risk Assessment and Implications of Schoolchildren Exposure to Classroom Heavy Metals Particles in Jeddah, Saudi Arabia
![Evidence on physical activity and osteoporosis prevention for people aged 65+ years: a systematic review to inform the WHO guidelines on physical activity and sedentary behaviour | International Journal of Behavioral Nutrition Evidence on physical activity and osteoporosis prevention for people aged 65+ years: a systematic review to inform the WHO guidelines on physical activity and sedentary behaviour | International Journal of Behavioral Nutrition](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2Fs12966-020-01040-4/MediaObjects/12966_2020_1040_Fig4_HTML.png)
Evidence on physical activity and osteoporosis prevention for people aged 65+ years: a systematic review to inform the WHO guidelines on physical activity and sedentary behaviour | International Journal of Behavioral Nutrition
![Structured physical exercise and recovery from first episode psychosis in young adults, the FitForLife study - ScienceDirect Structured physical exercise and recovery from first episode psychosis in young adults, the FitForLife study - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S016517811830101X-gr1.jpg)
Structured physical exercise and recovery from first episode psychosis in young adults, the FitForLife study - ScienceDirect
![Evidence on physical activity and osteoporosis prevention for people aged 65+ years: a systematic review to inform the WHO guidelines on physical activity and sedentary behaviour | International Journal of Behavioral Nutrition Evidence on physical activity and osteoporosis prevention for people aged 65+ years: a systematic review to inform the WHO guidelines on physical activity and sedentary behaviour | International Journal of Behavioral Nutrition](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2Fs12966-020-01040-4/MediaObjects/12966_2020_1040_Fig3_HTML.png)