Keeping your heart rate at the proper level during each workout improves that workout. It is that simple. But knowing the proper heart rate is key to gaining that extra benefit. Joe Friel guides readers step by step through the process of creating one's personalize heart rate program.
- Limba : Engleza
- Data Publicarii : 01 Nov 2006
- Format : Paperback
- Numar pagini : 144
- ISBN : 9781569755624