I've never seen an overweight person who exercised regularly and ate decently well. I'm not talking about hitting the gym 6 days a week but a healthy amount of daily activity be it walking, running, surfing, hiking. It is not and never has been complicated to lead a healthy lifestyle.
"Firefox Focus continues to operate as a Safari content blocker on iOS, and users will be able to take advantage of Tracking Protection on both Safari and Firefox Focus."