sleepy when working out

rubble20

I recently started working out again. I lost 30 lbs about 3 months ago and although I've maintained it I wasn't doing my daily work outs, maybe just once or twice a week. However, about a month ago I started to experience extreme sleepiness while exercising. I went for a jog and right in the middle of it I had an overwhelming sensation to just lay down and take a nap. It was a bit chilly outside and my lungs didn't appreciate the cold air so I chalked it up to that. Since then every time I work out I just feel exhausted. My muscles aren't fatigued and I otherwise feel great, just extremely sleepy like I could just lay down on the spot and take a nap.

I haven't been jogging because it's still too cold out. When I exercise I use the daily burn program so it's a mix of of kick boxing workouts and cardio/strength training.

Does this happen to anyone else? Any ideas what could be the cause of this or how I can prevent this from happening?

I do generally feel tired most of the time despite the number of hours of sleep I get a night. However, nothing has changed with that to be the cause of this sudden onset of work out sleepiness.

Ninkyou

How many calories are you eating?

Are you eating back your exercise calories?

Mistapholeezkat

I tend to yawn when I work out, like a lot. Maybe not enough O2 being processed?

Lizzy622

You may be experiencing a drop in blood sugar. You may want to talk to your doctor about this.

rubble20

@ninkyou - I haven't been tracking my calories but given that I haven't exactly been watching what I eat I am sure I'm eating back my exercise calories. (probably more haha)

starting my official diet today as i've got plenty more weight to lose.

deannakittygirl

Undiagnosed thyroid condition perhaps? Before I was diagnosed and properly medicated I was tired all the time even though I had adequate sleep. Check with doctor.