Is it normal to feel sick the day after an intense workout?

Maybe you're getting sick. When I'm wiped after an intense workout it's usually soon after the workout ends, never the next day. I might be sore the next day but nothing like what you described.

I agree it sounds like you need to take it easy and see what happens.

It may not be your workout. I did an intense workout on Friday. Then late Saturday, I started feeling achy with a scratchy throat, and very tired. Still not 100% today..still feel drained. I think for both of us...the body needs rest. It feels like I want to catch a cold, but my body is fighting as hard as it can not to get sick.

I can feel sick at times when I'm fatigued but it's rare and I'm pretty well conditioned. For me it's sort of an achy almost flu like ache but nothing with the stomach or head, more of an overall body ache. But that is because I push myself hard sometimes and for me that means I need a day off. For me one day of rest and I'm good to go again.

It could be fatigue, or it could be something else. You might have pushed to hard for just starting out. You might have switch it up to go a little less or workout every other day until you build up more stamina.

Adding the strength workout might have shocked your body a little. Make sure you eat right and get enough sleep...Its also better to do everything in steps instead of just burst into a new workout. Feeling a little sick after a new tough workout is normal (excess lactic acid buildup), but feeling very sick the next day may be caused by numerous things. Im NOT a doctor, but from what it sounds, its either from something you ate or you shocked your body by adding the upper-body.

Honestly, I think this is more likely due to under-eating. Your diary is closed so it's hard to know, but if I had to guess, I'd say you are not eating back your exercise calories?

It very common to be sick to feel unwell after an intense workout. You need to try and put yourself on a schedule and not do a whole lot every now and then. That's not at all good.

I don't know if it's normal for the rest of the world, but it surely happens to me. I'm a distance cyclist and it never happens during cycling, even when I cycle 140 miles in a day, but it happens after overly intense core workouts at the gym. "Toxic" is the best way to describe how I feel the next day. I should know better, but yesterday I started back to the gym for my winter core work and did way too much, so today, I know your pain! The workout did not feel overly challenging at the time but went on too long, with too many reps and too many new exercises. Too zealous to get going! I KNOW how to avoid it: cut back on the workout. Write a plan that uses lighter weights and fewer reps that increases both over time and DON'T let yourself exceed it. Drink lots of water while you're doing it...I consume 16 oz while exercising and another on the way home. I never have the problem when I write out the workout plans, using two different core routines alternated with stretches and stationary bike days. Use the "toxic day" to rest and drink lots of water. Rest even two days, doing only gentle stretches...and then go back but begin much more slowly. I think this is one reason why a lot of newly resolved exercisers lose their resolve after the first attempt -- they feel terrible and never go back. So ease up, be persistent but if you feel lousy the next day, you're overdoing it. Good luck.