# Practical Approach to Designing and Implementing a Recommendation System for Healthy Challenges
## 4 Discussion
### Comparison with Prior Work  
As mentioned in the introduction, several existing approaches in the literature aim to promote healthy habits, such as Public GYM [26], PRECIOUS [27], Fit brains trainer [28], Sworkit Lite [29], SAFER [30], HyperRecSysPA [31], Mind Match [32], Mindcraft [33], a food RS for the elderly [34], and a menu RS for young children [35]. In comparing these proposals with our developed tool, we can highlight the following distinctions. Public GYM [26] primarily focuses on recommending physical strengthening exercises at public gyms, neglecting other aspects. In contrast, our tool comprehensively addresses PA, healthy eating, mental health, and sleep quality, aiming to improve the overall quality of life. Furthermore, our tool incorporates validation processes, unlike Public GYM. PRECIOUS [27], while addressing some dimensions, lacks the comprehensive approach of our tool. Our tool encompasses physical, mental, nutritional, and sleep quality dimensions, promoting an improved quality of life through motivating challenges. Fit brains trainer [28] exclusively targets cognitive improvement, disregarding other dimensions such as healthy eating, PA, and social activities, which our tool encompasses. Sworkit Lite [29] does not perform an initial assessment or create personalized user profiles for tailored recommendations. In contrast, our tool utilizes questionnaires and user-specific scores to create profiles and recommend challenges based on individual characteristics and dimension scores. SAFER [30] has some similarities in terms of user profile creation but lacks the depth and validated questionnaires employed by our tool. Additionally, SAFER only recommends recreational and cultural activities, limiting its ability to comprehensively influence quality of life compared to our tool. HyperRecSysPA [31] shares a similar validation approach with our tool, involving expert evaluations. However, HyperRecSysPA is specific to patients with arterial hypertension, focusing solely on PA. In contrast, our tool aims to prevent and enhance quality of life across multiple dimensions: PA, healthy eating, mental health, and sleep quality. Mind Match [32], similar to our approach, uses questions derived from validated questionnaires to assess users. However, there is a distinction in that they solely evaluate one dimension, namely mental health, as opposed to our comprehensive approach that delves into both physical and mental well-being, along with dietary and sleep habits. Furthermore, their tool lacks any indication of validation. In Mindcraft [33], they do not mention the use of any user assessment questionnaire; instead, they focus on emotional well-being, encompassing mental health and sleep. Moreover, their app receives favorable ratings when using the app. Notably, they employ gamification to engage users with their activities. Their emphasis is solely on mental health and sleep, unlike our proposition, which aims to influence physical activity, mental health, and dietary and sleep habits. Additionally, their tool does not provide users with any form of health assessment in contrast to the comprehensive evaluation conducted in our proposal through standardized questionnaires. [PERSON] et al. [34] simply segregate users into groups to provide dietary recommendations based on their group, without utilizing any validated questionnaire to assess users, nor providing any feedback on their health status. [PERSON] et al. [35] conducted an assessment of macronutrient intake by weighing children's meals before and after consumption. Based on the results of these weightings, they categorize them into four groups to tailor menu recommendations accordingly. Once again, this approach appears to focus solely on influencing one aspect of users without addressing their overall health comprehensively.