Thank you so much for taking the time for providing the guidance, it shows in your passion to help others and may you be blessed always for your kind deed. I bet i wouldnt be able to write at length but would try to share as per your input above. My actual intention is to lose weight and be fit before i end up triggering the time bomb that i am currently. In other words, with my BMI of 44 and body fat of 35.7 (based on my Omron Connect Scale), I am highly candidate for major health issues like BP and Diabetes.
Thankfully as of my last medical check up done 9 months ago, my BP, sugar and cholesterol are in order but the doc has indicated that if i dont reduce, the numbers could turn the other way round and it was sort of a wake-up call, i know it could take me so long to wake up, but at least i got up from the slumber.
As for the devices, I am currently using Garmin watch with heart strap and rarely do treadmill runs as i prefer the outdoors, i have also hooked my Garmin Connect to Strava and that has helped me in a sense where it shows my comparison from the time i started to where i am currently. You are right, I am able to do 5km today in 56 mins with average HR of 145bpm in comparison to when i started 2.75km at 42.55min (15.36 pace) with average HR of 153bpm.
Probably i am getting slightly more edgy as i get more active to try to make my pace better but a good friend of mine who does regular 5.5min/km pace did indicate that i have to be realistic with my body right now, one of the good motivating statement he gave was that, if with his current weight, he is asked to lug around additional weight to reflect my current body weight, in no way would he be able to finish 5km at my pace (or even finish at all!).
That gave me the comfort and likewise for cycling, today i have all the road bikes buzzing past me but there will come a day when all these weight will go and my training at this weight limit would come in handy to propel me much further... it has not been an easy journey but i am a different person than i was 6 months ago. i will be going for my medical check up in Nov and i am certain the numbers would be much better overall and my stress test would also reflect the same.
i cant thank you enough for your response and this avenue also did make me dare approach people like my friend whom otherwise i would not have asked for opinions and funny enough that for every 1 person at the park who nudges his wife/gf to say "hei check that fat dude out trying to run", there are other 9 who would look at you and say "go on dude, everyday is a step towards progress"
You can also follow various running FB pages who will share their experiences. Great job and keep it up!!