Experimental: Mindfulness Yoga and Time-Restricted Eating Intervention

Participants in this arm will take part in a 9-month intervention consisting of yoga-based mindfulness sessions combined with time-restricted eating (16:8 protocol). The yoga program includes physical postures (asanas), breathing techniques, and meditation, aimed at improving physical fitness, stress regulation, and cognitive function. The dietary component promotes a flexitarian diet within an 8-hour daily eating window. Sessions are conducted twice weekly for 90 minutes under certified instructors.

Active_comparator: Cognitive Training and Stretching Intervention

Participants in this arm will engage in a 9-month intervention including cognitive training exercises and guided stretching. The cognitive program targets multiple domains: verbal and non-verbal memory, executive functions, attention, language, and social cognition. Sessions are delivered twice weekly for 90 minutes by trained therapists. This intervention serves as an active comparator for assessing the effects of yoga and dietary modification on cognitive and biological outcomes.