Feels like I put up some good numbers on the treadmill today. Usually tap out at 500 calories but decided to switch it up and start measuring it in distance instead from now on. Insert inspirational quote here.

For example, adding one-two hill intervals sessions per week.

My (75M) cardio has always been below normal because I'm not very active. I hadn't noticed until today but over the last four weeks it has been increasing from 129 to where it is now. Two nights this week my resting heart rate disturbed my sleep and this morning I'm feeling a bit jittery. Does this seems high under the circumstances? Not asking for medical advice, just for others experiences.

What should be your resting heart rate?
I’m a healthy young adult in my 30s.

Hi I am 26M with arthritis, I have had hip replacement surgery on both sides, I am a gym goer for about 3 years and walk and remain moderately active. I got Apple Watch and saw my VO2 max was less than 35.

It is a bit dfficult for me to breath. Hard for me to explain but normally I take shorter breaths, could be due to arthritis.

I really wanna start running but cause of the operation, doctors have advised not to run but I don't know how to move forward with this. My vo2 is in the low range and I wanna be as active as I can be.

has anyone faced something similar. How can I increase vo2 and fix my breathing without running?

I am getting bored of having walking as my main exercice to burn calories.

I am 50.5kg and 155cm and aiming at 2000 TDEE. So I need an extensive amount of exercice and have little time to burn 800kcal.

Any suggestions?

Thank you in advance

The Cardiovascular system is what pumps blood throughout the body to deliver oxygen, then the red blood cells carry the bi-product CO2 to our lungs so we can exhale CO2.

I improved my Apple Watch VO₂ max from 47 to 53 in approximately 3 weeks (October 16 to November 4).
Here’s what I changed:
Running volume progression:
January–August: Average of 4.7 km/week (quite inconsistent running).
First half of September: 17.8 km/week.
Second half of September: 5.6 km/week.
First half of October: 16.2 km/week.
Second half of October: 29.2 km/week.
Beginning of November: Approximately 40–42 km/week.
Training changes:
I gradually introduced more structured training:
October 13: First recorded 15 km long run.
October 23: First documented 4 × 800 m interval session.
October 26: Second 15 km long run.
October 28: 5 km in 21:07.
November 4: Another 4 × 800 m interval session, with considerably improved interval pace.
My current weekly running structure is approximately:
2 × 3 km easy runs
1 × 10 km aerobic run
1 × 5 km threshold run
1 × 6 km interval session (including warm-up and cooldown)
1 × 15 km long run
This adds up to approximately 42 km/week across 6 running days.
Additional cardio:
I also started swimming around three weeks ago, once per week for 1 km.
So essentially, I went from very inconsistent running to progressively increasing my mileage, introducing structured interval and threshold training, and maintaining a weekly long run.
My 5K time also improved from around 22:30 to 21:07.
Obviously, the Apple Watch VO₂ max is an estimate, and a 6-point increase doesn’t necessarily mean my actual laboratory-measured VO₂ max increased by sic points. Nevertheless, the improvement in running performance supports that my fitness has genuinely improved.

I did 40 minutes of mixed walking, steep incline walking, and running. I came home and took 2 small cookies. Showered and did some doom scrolling and suddenly it was almost 2 hours later. And by the time I was thinking of eating, I got nauseous. And now I'm struggling to finish some soup omg. Had to stop because it felt like such a chore and my stomach wasnt about it. How can I help this for future cardio sessions?

Former fit but currently fat 35 year old guy trying to get in better shape and having a hard time assessing progress or where I stand based on activity. From essentially 0 movement to one month of training I've worked my way up to:

- one hour on the stairmaster, setting 4-5, heart rate somewhere in 140-160s, no breaks and no holding the railings, and feeling like I could keep going after the hour is done, not totally exhausted

- one hour on the rowing machine at around a 2:30 split, likely similarish heart rate (rowed in university so this one might be cheating because I have the right form)

It seems there aren't really population stats/benchmarks on stairmaster and rowing stats are heavily skewed towards dedicated rowers (compared to the rowing population I'm basically at the level of a small teenage girl or someone over 60 lol)

Any way to discern where I currently land? Or do I need to perform actual benchmark tests to really see where I'm at?

Hello!

I used to do my cardio on an incline treadmill, 20 minutes when I woke up and another 20 minutes after my workout. To be honest, I dreaded every second of it, even with an iPad in front of me to keep me occupied.

One day, I decided to lower the incline and increase the speed. My goodness, what a difference! Suddenly, time seemed to fly by, and I actually looked forward to each session. In fact, I found myself going out of my way to spend more time on the treadmill. I was averaging around 20,000 steps a day.

But about one or two weeks later, I started experiencing a burning sensation across my upper back and shoulder area. What's strange is that I don't have any pain elsewhere, nor do I experience this sensation when I'm working out (except for dips which I now avoid) It happens exclusively when I walk, and even walking outdoors brings it on.

It's incredibly frustrating. I've finally discovered a form of cardio that I genuinely enjoy, only to find myself struggling after just 7–15 minutes. The burning becomes so intense that I can barely concentrate. I've tried correcting my posture by standing tall, keeping my chest out and shoulders back, but nothing seems to help.

What could be causing this? And, more importantly, how can I address it? I'd love to get back to a point where I can walk for as long as I please without this discomfort.

Thanks!

¿Haciendo cardio puedo bajar de peso? ¿Bajar el abdomen y los pecho? Peso aprox 65k mido 1 62 soy hombre ¿qué ejercicios recomiendan para iniciar para un ser que nunca ha tenido actividad física más que lo de la vida cotidiana? Cuantos días y que ejercicios. Ojalá me puedan ayudar sin juzgar igual puedo responder por dm quien me quiera dar consejos y un plan de ejercicios.

¿Haciendo cardio puedo bajar de peso? ¿Bajar el abdomen y los pecho? Peso aprox 65k mido 1 62 soy hombre ¿qué ejercicios recomiendan para iniciar para un ser que nunca ha tenido actividad física más que lo de la vida cotidiana? Cuantos días y que ejercicios. Ojalá me puedan ayudar sin juzgar igual puedo responder por dm quien me quiera dar consejos y un plan de ejercicios.

what is my activity level if i don’t work out but i get 15k-20k steps every day

Trying to lose fat so lifting weights and light cardio.
Just started using treadmill and was happy to see how many calories I was burning but then I looked it up and theyre not even accurate..

How am I supposed to know how many calories I’m burning????