Exercise and push ups?

I know to exercise but before my vacation had this lump behind my ear end up & i got little worried but end up being big cyst acne pimple anyways I went to dermatologist doctor and he said my weight is normal and look good so at that time I weight 108 before i left and i went & came back after my one month vacation so i've again about 10 pound from delicious food we have had but i end up losing the weight every year that i come back to 108 again anyways I want to start exercise again since starting to cool down again & where i live it been 110 in Summer and Winter get up to 60 degrees during the day and i walk my two dogs every night or early moring, so i want to start exercise in my tummy, because it can look like i be 5 months prego so i was wondering of how many push up and sit up do i need to start? I'm happy with my weight but i want to build up muscles at home since can't ford the gym right now & i walk every day around our park with my dogs and size is big circle & it's round the pound so how many times a day should I do my sit up and push ups

No more weight related questions on here. You guys are too obsessed.

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