from illness. running will be taking away from those energy stores.
as runners, we are more in tune with our bodies than non-runners. so keep listening. do your training sessions feel more difficult than normal? is your breathing or heart rate different? how about your resting heart rate, notice a change? are you recovering as normal between runs, or do you feel exhausted? look out for early signs of illness so you can rest and nip it in the bud.
if you do need to take time off running, make the most of the recovery period. really rest, don’t try to replace your running sessions with something else. get lots of sleep, 