Readers reply: is running up and down a hill better for you than running on the flat?
Life and style | The Guardian
The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
Is running up and down a hill better for you than running on the flat? Or does the downhill bit being easier counteract the uphill bit? What about running down a hill and then up, when you’re already tired? Steve Henderson, Wythenshawe
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