18.95
20-21 is a fusion of callisthenics, yoga asana, NLP (Neuro-Linguistic Programming) and Meditation. His training is based on the premise that 20 minutes is the amount of time that a person can concentrate on a task without becoming distracted; and that creating a positive mental habit takes 21 days to improve your shape, strength and flexibility.

- : Wayne Leal
- : Libri Publishing
- : 9781912969562
- : Engels
- : Paperback
- : 64
- : mei 2023
- : 126
- : 152 x 228 x 7 mm.
- : Populairwetenschappelijke geneesmiddelen en gezondheid

