Personally, I focussed on Garmin, because their ecosystem allows you to upload any workout in FIT or CSV format in literally one click without any restrictions. This helps a lot when you want to keep your diary and know exactly how much resources are spent on security forces. I just read the material https://betterme.world/articles/bubble-butt-workout/ about effective isolation exercises for buttock volume and compared heart rate indicators on different sets. If you value the freedom to manipulate data from your training, this is definitely the best tool!
Personally, I focussed on Garmin, because their ecosystem allows you to upload any workout in FIT or CSV format in literally one click without any restrictions. This helps a lot when you want to keep your diary and know exactly how much resources are spent on security forces. I just read the material https://betterme.world/articles/bubble-butt-workout/ about effective isolation exercises for buttock volume and compared heart rate indicators on different sets. If you value the freedom to manipulate data from your training, this is definitely the best tool!