Hi, 35 yr old white male here - I've got about 110 more pounds to lose (already lost 20). For my weight, I'm surprisingly "athletic" underneath it all - lately, I have been doing 70 minutes per day of fast walking (targeting my pulse at 140-145 bpm for the 70 mins. I am even at the point to where I feel like this routine isn't challenging enough and I could exercise a lot harder, but I have always read that if you exercise above a certain level you no longer burn fat, but rather start burning muscle or just glucose.
About some symptoms I've had, also.. one day after working out, for several hours, I felt generally weak / weird. If I walked up some stairs, my heart would pound harder than it should. I kept feeling rushes in my stomach and getting very lightheaded and weak for several minutes. The rush in my stomach feels like nausea and free falling. Question is, what do you make of my routine? i was thinking maybe my symptoms are a sign of over training since I do 70 minutes every day, even though I feel like I can do more? Or could it be something else? Would you change anything about my routine for fat loss? Can I exercise even more? Worth noting, I have had a stress echo within the past year because I have a history of PVC's though the test was normal
If you can tolerate 70 minutes of exercise without significant difficulty, it would be hard to pin your symptoms on a heart problem. You are basically giving yourself a stress test every time to exercise, and it sounds like you are passing on a daily basis. The fatigue/weakness you are feeling afterwards is likely just because you are exhausted from your exercise routine. Make sure you are getting enough water to stay hydrated and make sure you are eating enough to supply the energy to exercise the way you are.
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