30-20-10

https://www.researchgate.net/profile/Thomas-Gunnarsson/publication/224897650_The_10-20-30_training_concept_improves_performance_and_health_profile_in_moderately_trained_runners/links/0c960520dc60dbce36000000/The-10-20-30-training-concept-improves-performance-and-health-profile-in-moderately-trained-runners.pdf?origin=publication_detail&_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InB1YmxpY2F0aW9uRG93bmxvYWQiLCJwcmV2aW91c1BhZ2UiOiJwdWJsaWNhdGlvbiJ9fQ