In a former career, quite a few people were using these. I was never able to mix critical keyboarding while walking.
I prefer now, to workout before the morning trades, go for a walk around lunch and then walk again in the evening.
No weight loss, but fit.
2 guys are going to the vasectomy clinic, 1st guy pulls up to pick up his buddy and says Whoa, why are you wearing a tuxedo to the clinic? 2nd guy says, if I's gonna be impotent, I's gonna look impotent! :o
Personally the worst trade is to be up, somewhat but not near your target yet and not able to set the stop to B/E.
Trade stalls and becomes a loser. I struggle with that a lot.