Its fine but less effective.
Crunches on bed or floor.
They can be dangerous.
It ll work your abs more to keep your body in line on this unstable surface.
The reason you don t want to do it on the bed is that it has too much give which allows you to curl easier.
Blanket on the floor can work as well.
This exercise targets the lower abdominals.
No longer do you have to choose between working your abs and getting out of bed.
Slide yourself forward until your hips are on the side of the bed.
If you can get a carpet rug or something spongey for the floor that should be good enough.
Lying on your back place the soles of your feet together.
Fine stay in bed.
Your feet will naturally twist as you do.
Raise your legs high up off the bed to create a butterfly shape.
Doing crunches in both a safe and effective manner require a good deal of body awareness and anatomical knowledge.
Although the softness of your bed surface can alleviate this discomfort inadequate support from a sagging mattress platform can also cause back strain and discomfort.
Place your hands on the floor in a handstand position.
That should do the trick.
You can still transform your body with exercises you can do right on your mattress.
No longer do you have to choose between working your abs and getting out of bed.
Ace exercise physiologist pete mccall notes that traditional situps and crunches performed on the floor can force the spine into the ground and cause lower back pain.
But having taught dance and conditioning for over a decade most people are not doing them right.
Do a few easy moves while still in bed for the best of both worlds.
I mean do it on a yoga mat.
But it is better you do it on the floor but not directly.
10 reasons why you should not do crunches 1.
Sure if you do them right crunches can be harmless.
Since you re on a wobbly surface on your soft mattress this exercise might be more challenging in bed to keep your body in line.
Not hard surface like concrete.
Choose a few of them or complete every move and perform as many reps as you can in 30 seconds.
Floor is better than bed but you want matting.
Do a few easy moves while still in bed for the best of both worlds.
You might find it easier to do this and any planks on the floor if you re a beginner.
Planks is the best and the only way to do best ab workou.