Please see: https://www.artofmanliness.com/health-fitness/fitness/heavyh...

Basically use all your four limbs while working out, even running appears to be a dumb way of exercising since only two limbs are involved at any given time.

If walking is what you are happy to do, then use resting heart rate and maximum heart measurements to guide your effort.

This the full sentence. The cardiovascular workload of jogging is for sub 2 kg weights.

So it depends on the weights and pump levels your are using. 1 - 2 kg weights definitely has cardiovascular workloads of jogging. The >2 kg weights are a different deal altogether. In my experience running doesn't hold a candle to what happens from 3 kg onwards. In a 2 hour walk, you are lifting tons of weights as your are walking(with extra kgs of weight on your body), for like 2 hours straight.

It might even be unfair to compare it with running because this is really a very different exercise altogether. Only thing that I found somewhat comparable is swimming.

As a general rule never exercise with just two limbs alone. Its a poor return on investment for the time spent. This literally follows from logic.

https://www.ntnu.edu/cerg/personal-activity-intelligence#Bet...

There are some more details in the above article.

The highest VO2 maximums ever recorded by a group of athletes were not registered by endurance runners, which is what he had logically presupposed before his investigations, but rather by Russian and Norwegian cross-country skiers. Why was this? He wondered. It didn't take long for him to come up with the answer: the skiers generated propulsion using all four limbs. The runners used only their legs.

While the majority of the aerobic world used two limbs, the legs, in their respective modes, the skiers were using four limbs to power locomotion.

The poundage possibilities were limitless. A person moving a pair of 20 pound dumbbells short distances for 10 minutes would net far different results than a jogger throwing 2 pound hand weights head high for 60 minutes.

Len's own transformation was mind-blowing and pointed out how effective the studies use of quad-limbed cardio exercise could be ...

(Followed by a table of resting heart rate details)

"The elite marathoner runs at approximately 75% of his maximum workload capacity. A Heavyhand user can generate 50% of leg capacity, 50% of arm capacity and exceed the marathon runner's 75% of maximum capacity using legs only. This is why Heavyhands feels easier. Lots of units, each doing less, add up to more."

Its great you were able to walk with a 2.5 kgs on the very first try.

The higher weights will be even better. It feels so obvious now that we see this, but it follows from common sense, with four limbs and weights the workload is far higher than a regular walk/jog/run.

There is no sense in going to back to regular plain weightless hand walk/run/jogs.