Interval Track Training
For the past 4 weeks i've been going to a local track and running with a club doing interval training - i run in a group and i;ve never run so fast and so hard! The intervals are tough but at the end its a great session and obviously has lots of benefits - the problem is that for a day or two after, i feel tired and lethargic - which impacts my other training sessions.
I've only been doing this type of training a short while and maybe given a bit more time, i wont feel this so much. Any thoughts on this? I know this is supposed to be a great way of improving speed and fitness.