How much exercise is too much?

Depends really on what you're trying to achieve. If it's weight loss, you're sure to burn off loads of calories with what you're doing. However, if you're not fuelling your body adequately you might feel unwell and your body composition may go off. If you're trying to gain weight, then you need to ensure you're eating another to recover the calories you've burnt exercising.

If it works for you it's fine...and nobody else's business! I suspect the ones telling you to reduce your activity level do not understand or appreciate the value of fitness.

I'm a female vet and people do not understand my need to workout. It was ingrained at a very impressionable time in my life: keep going, don't stop, push yourself, meet the goal, exceed the goal, raise the goal. Repeat.

Unless it's causing you issues, I fail to see that there is such a thing as "too much."

The biggest issue I could potentially see if you, is if you were to have an injury that sidelined you for more than a few days or so, the loss of that much activity could have a large impact on your weight if you don't dramatically reduce your intake at that time.

Plenty of easy ways to sneak in calories if you fee like you're coming up short and suffering from it.

I'm around your size and weight, older (62), not doing anything like your workout routine . . . but I don't see anything wrong with it, as long as you're feeling fine. IMO, the only "too much exercise" is if it causes overuse injuries, causes overtraining symptoms, is exhausting, or throw's one's life out of good overall balance (i.e., doesn't leave enough time for job, family, social life, intellect, creativity, etc. . . . with "enough time" being an utterly individual, subjective personal preference).

As a li'l ol' worried granny type, I'd be a little concerned about whether you're fueling that activity adequately. I maintain on around 2100-2300, while doing only an hour or so of on-water rowing or a single spin class 6 days a week, plus some irregular lifting, with a pretty sedentary life otherwise. I admit to being a surprisingly good calorie burner for unknown reasons, but it still makes me wonder how someone about my size could sustain your schedule on 2000.

14% body fat is just above the line between essential body fat and very lean, for women, based on the American Council on Exercise recommendations, with essential body fat being the range where negative health consequences become a statistical risk. Obviously, you're an individual, not a statistic, and you (and your doctor) know how you're doing, but it's a consideration. I hope you're getting ample protein with that workout schedule, and overall good nutrition.

Best wishes!

Honestly if it works for you it works for you. From what I've read from your posts you seem like someone who knows how to listen to their body so I wouldn't stress about it. I recently moved up to working out 6 days a week with three of those days being two a days - running in the morning and cycling in the evening. I know a number of people who work out more than this and plenty who work out less. What's important is that it remain sustainable (which may very well mean changing what you do and how often).

Rest is an important component in any exercise regimen and gets more important as you age. In Joe Friel's book Fast After Fifty (yes I know you are not quite there yet) he summarizes the two most important keys to maintaining fitness as you get older are (1) incorporating High Intensity Training and (2) ensuring you get enough rest. As you age you just need more recovery time. Friel (Runners Training Bible, Triathletes Training Bible) is a big proponent of Periodized training - where you have 2-3 weeks of higher volume, higher intensity training followed by a week of reduced effort. That allows your body some time to recover and rebuild. That might be something you want to consider.

Make sure you really take a break on your rest days! I found once I started exercising more than once per day that rest days were hard to rest on, I wanted to go on hikes, hit the gym, go running.
Just be mindful that you are honestly giving all of your body a rest.

I overdo all the time.
Exercise is my relaxation, my meditation. So it is hard to take days off.
I can do it too.
But I know when I need to take a day off, because when I set off to do my activity that day, my run, my tennis, my lifting, I have a little tinge of dread.
I mention this because I think sometimes we don't listen to that. We push through, right? Because exercise is always kind hard, and activities like running and lifting are about pushing through what is hard.
But that dread. You have to listen to that subtle, niggling dread that is easy to ignore and think, "Oh, I'll be alright once I get started and I'll feel better when I am done."

The ones needing the most recovery are the weights & running, both spinning & swimming are zero impact so I'd say if you're getting enough sleep, eating enough and aren't feeling unduly fatigued you're fine. I'm jealous about the afternoon nap.....