My heart rate is usually in the 80s now its in the 70s is that ok. that is when in rest. i know its all normal but is it normal for it to change a lot? thank you?

It sounds like a perfectly normal heart rate that is expected to change (adjust) based on physical and emotional challenges.

Your heart rate is normal. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines