Do you smoke cigarettes? Researchers at Rosalind Franklin University are recruiting participants for a 5-week research study looking at how changes in cigarette smoking may influence behaviors, mood, and heart health. We are looking for people who are: 1) 21-85 years old, 2) currently smoking cigarettes, 3) able to travel to North Chicago, IL (~15 minutes from Six Flags) for four sessions, 4) willing to have their blood drawn, and 5) regularly use a smartphone. Participants can earn up to $453! If you are interested, please complete our brief interest survey below! https://rosalindfranklin.qualtrics.com/jfe/form/SV_0l9O76KMOgXX7Iq