Re: jogging or running
How can you keep your breathing regular if you are talking? I think this is a sure way to get out of breath.
Isn't that the point being made? if you try talk and find that there's not enough breath to do so, then its an indication that the runner is going at it too hard. Try it and see - it is a widely accepted measure of a decent pace.
If you have a sore throat at the end of it, you've been breathing too hard and your throat is raw and dry as a bone. Fair play for exerting yourself, but you are overdoing it rather than breathing 'wrong'.
I also think that investing in monitors may not be money well spent. I've heard various things about them and tried it for a while with my own - which promptly broke - and while it tells you your heart rate etc., I never found it particularly informative and scared me a bit when I could see the peaks of my heart rate being well above the maximal range indicated for my age. They were, of course, just peaks and the doc explained that its the average which is important.
Currently I use a cheapo, old-fashioned digital watch which has a stopwatch timer. Your pace per mile or kilometre is easy to calculate as you pass the mile or km markers and you'll learn quickly how to quicken or slow your pace to match your ability.
The best investment anyone can make for their running/jogging/walking is their shoes. Most people now run on tarmac or concrete and there is no give underfoot - making it important to be fitted for a quality pair of shoes designed to absorb this impact and, at the same time, match how they run. Poor or badly-chosen shoes can lead to tiredness, strains and injury. Leave the fashion store trainers for when you aren't out running and go to (at least) a proper sports shop or (at best and if you're serious about it) a specialist running store to be fitted for shoes that will work for you best.
It could also be that you feel a bit competitive and like a higher pace. If you want to run because you find jogging a bit pedestrian, then you need to have the aerobic fitness to match this. You'll easily develop this over time, but you want to go out at least four times a week to do 20-30mins each time if you're going to run 10k, so make sure that you're doing enough training to support your ambitions and leave the rest of them trundling along at their slower pace!