Moving into intervals now, and with work and home life and the weather
all conspiring to throw me off track, I need to think about the best way
to approach intervals. I want to minimize risk of injury while training
optimally (if that's not just too ridiculous to contemplate for someone
both employed and married...)
Should you start with fewer reps of longer slower intervals (like 1 km -
2 miles) and progress towards more reps of shorter faster intervals
(like 440s and 880s)? This would seem to reduce the potential for
injury because the pace is not that much faster than normal. However,
maybe the shorter intervals are less stressful just because they are so
much shorter. Which do you think it is?
I am assuming that if one is training for a marathon, that much of the
benefit will come from the longer intervals. The short ones can be run
at a pace that is completely different to a marathon pace. However,
they might have some benefit in terms of muscle development or cardio
improvement. What's your understanding?