Why did I get slower running?

Training. One of the more common reasons that you might be running slower is that something is off in your training. Whether it be your mileage, the quality of workouts, variety of speeds, or a number of other components, your training might be the reason you are slowing down.

What happens to your body when you run for a long time?

Running increases levels of endorphins that naturally boost your mood and increase feelings of well-being and calmness — aka the runner’s high. Don’t be surprised if you suddenly forget about all the pain in time to sign up for your next marathon.

How does running improve aerobic endurance?

5 Training tips to help improve your aerobic endurance

1. Try some HIIT. Yes, we know, we know.
2. Add in some strength training. Strength training can be used alongside aerobic training to boost your endurance.
3. Build it up slowly and rest.
4. Consume those carbs.
5. Choose natural energy boosters.
6. Make sure you hydrate.

Is a 12 minute mile running?

If you’re new to running, you might run one mile in closer to 12 to 15 minutes as you build up endurance….Average running speed per mile in a 5K.

Age	Men (minutes per mile)	Women (minutes per mile)
35–39	10:53	12:03
40–44	10:28	12:24
45–49	10:43	12:41
50–54	11:08	13:20

Why I Cannot run fast?

Over the course of a sustained run at half-marathon pace or faster, the amount of energy (and thus oxygen) needed to maintain that pace gradually inches upward. Over the course of 10-20 minutes, your oxygen consumption can drift upward by as much as 25 per cent, making it progressively harder for you to hold your pace.

How long is aerobic running?

The majority of benefits really begin to kick in when your long run lasts between 90 minutes and 3.5 hours. Keep the pace of long runs mostly easy and add about a mile every 1–2 weeks. But every 4–5 weeks, it’s wise to cut the distance back to ensure you’re recovering and not increasing your risk of running injuries.

https://www.youtube.com/watch?v=ZzXDq4Ye5L8