An excerpt from “The unpublished Echo training manual”

“Volunteers must be in good physical condition and we recommend the following acclimatisation training regime to simulate the conditions you will be working in:

One hour cycling

One hour on a Stairmaster in a sauna whilst being whipped with thorn branches,

Two hours sitting in the sauna

One hour on Stairmaster in sauna whilst being whipped with thorn branches

One hour cycling”