Hmm, not sure about the tingling.
When I did TT for women I did a long cardio day running and about 2 sprinting days. I think the purpose of the sprinting is to not wear yourself out with the warm-ups and rests, so you can work really hard during the intervals. I'd walk between intervals and do a slow jog or even walk home when you're done.
And congrats on doing TT for women...if you want to read my old log when I was doing it...here it is:
Cappy's first TT log
Lots of side rambling, but you'll see the workouts are very similar. The first few weeks I was doing the original TT then switched to TT for women.