Bulk up arms, legs and stomach?!

Question: I'm 6ft and are a bit overweight. I want to bulk up my arms legs and stomach muscles. But I have to be able to do this mainly at home, I have like social anxiety and stuff.
Will things like pushups, situps and I can ride a exersize bike for my legs, will they be enough to bulk me up?

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Answers: I'm 6ft and are a bit overweight. I want to bulk up my arms legs and stomach muscles. But I have to be able to do this mainly at home, I have like social anxiety and stuff.
Will things like pushups, situps and I can ride a exersize bike for my legs, will they be enough to bulk me up?

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To bulk up takes heavy weightlifting. The muscles respond to the added demand by rebuilding larger and stronger. Non-heavy weights (higher reps) improve cardio vascular and endurance but does not "bulk up". Ever see a bulked up marathon runner?

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