what should be the position of your feet while running, it is most important that you do not have to take too long tax and a lot and you have to run at a regular speed only this time Do not do more or less on time, then only you will be able to run longer
you must take care of your chest and stomach, it is very forward It should not be tilted towards the side nor do you have to take your stomach back which means you can add it straight, it will be good
to increase stamina, you need to hit regular running because this will make your body get used to running and then your stamina will increase automatically. Staying active at work