www.run4prs.com Question 1→ VDOT says I can run faster in the marathon by 20 min. My lungs don’t give out but my legs do! I run 50 miles a week (2 speed work days, 1 LR, 3 easy), Fasted marathon was 4hr. Current projection based on a 1/2 marathon Vdot calculation has me set for a 3:40 marathon I often find it hard to breathe for the hour+ following an interval workout. my muscles rarely are sore or give up before my breath gives out.  Question 2- Tips for running during pregnancy Two end of the spectrum. You never know how you wil feel. Things will be different. Listen to your body. Adjust your goals. Turn strava off. Run with a slower group like moms on the run. Running will feel harder at some point. Do not compare your pregnancy to others. Comparing your kids to others, etc.  Question 3- Can you train consecutive cycles for a 5k or do you still need to periodize Question 4- Breastfeeding race day logistics Question 5-Should I use MAC HR or lactate threshold HR to train in zone 2?